8-K 1 csfb04008_dec.txt DEC.8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D. C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 27, 2004 CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION Mortgage-Backed P/T Certificates, Series 2004-8 Trust (Exact name of registrant as specified in its charter) New York (governing law of 333-115435-08 Pooling and Servicing Agreement) (Commission 54-2163758 (State or other File Number) 54-2163759 jurisdiction 54-2163760 of Incorporation) 54-2163761 54-2163762 54-2163763 IRS EIN c/o Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (410) 884-2000 (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below): [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act(17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act(17 CFR 240.13e-4(c)) ITEM 8.01 Other Events On December 27, 2004 a distribution was made to holders of CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION, Mortgage-Backed P/T Certificates, Series 2004-8 Trust. ITEM 9.01 Financial Statements and Exhibits (c) Exhibits Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage-Backed P/T Certificates, Series 2004-8 Trust, relating to the December 27, 2004 distribution. Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORPORATION Mortgage-Backed P/T Certificates, Series 2004-8 Trust (Registrant) By: Wells Fargo Bank, N.A. as Trust Administrator By: /s/ Beth Belfield as Assistant Vice President By: Beth Belfield as Assistant Vice President Date: 1/3/05 INDEX TO EXHIBITS Exhibit Number Description EX-99.1 Monthly report distributed to holders of Mortgage-Backed P/T Certificates, Series 2004-8 Trust , relating to the December 27, 2004 distribution. EX-99.1

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
_____
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15 (d)
OF THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (date of earliest event reported) December 22, 2004
CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.
(Exact name of registrant as specified in its charter)
Delaware (State or other jurisdiction of incorporation)	333-110800 (Commission File Number)		13-3320910 (IRS Employer ID Number)
11 Madison Avenue New York, New York		10010
(Address of principal executive offices)		(Zip Code)
Registrant’s Telephone Number, including area code:		(212) 325-2000
No Change (Former name or former address, if changed since last report)

~~Check~~Certificateholder ~~the~~Distribution ~~appropriate~~Summary ~~box~~(continued) ~~below~~Current ifEnding ~~the~~Cumulative ~~Form~~Realized Certificate Total Realized Class Loss Balance Distribution Losses I-A1 0.00 11,000,000.00 50,367.21 0.00 I-A2 0.00 94,876,772.69 3,881,883.18 0.00 I-A3 0.00 3,350,000.00 15,339.10 0.00 I-A4 0.00 15,000,000.00 68,682.56 0.00 I-A5 0.00 1,778,204.00 8,142.11 0.00 I-KA6 ~~filing~~0.00 is3,000,000.00 ~~intended~~13,736.51 to0.00 ~~simultaneously~~I-A7 ~~satisfy~~0.00 412,500.00 1,888.77 0.00 I-A8 0.00 11,859,596.47 457,607.52 0.00 I-A9 0.00 0.00 50,651.10 0.00 II-A1 0.00 56,454,099.01 804,140.86 0.00 III-A1 0.00 1,500,000.00 6,875.00 0.00 III-A2 0.00 3,000,000.00 13,750.00 0.00 III-A3 0.00 2,750,000.00 12,604.17 0.00 III-A4 0.00 6,350,000.00 29,104.17 0.00 III-A5 0.00 46,631,521.60 2,600,290.72 0.00 IV-A1 0.00 141,287,842.23 4,376,144.93 0.00 IV-A2 0.00 5,000,000.00 22,896.11 0.00 IV-A3 0.00 28,808,708.00 131,921.46 0.00 IV-A4 0.00 2,728,316.95 84,504.87 0.00 IV-A5 0.00 1,500,000.00 6,556.61 0.00 IV-A6 0.00 2,250,000.00 10,303.25 0.00 IV-A7 0.00 1,750,000.00 8,013.64 0.00 IV-A8 0.00 1,500,000.00 7,181.05 0.00 V-A1 0.00 64,661,939.42 1,464,045.58 0.00 V-A2 0.00 162,415.00 3,677.33 0.00 VI-A1 0.00 48,374,094.91 780,399.79 0.00 VII-A1 0.00 55,918,761.00 931,648.86 0.00 VIII-A1 0.00 13,000,000.00 62,291.67 0.00 VIII-A2 0.00 78,613,546.58 7,701,760.30 0.00 VIII-A3 0.00 343,750.00 1,647.14 0.00 VIII-A4 0.00 12,500,000.00 59,895.83 0.00 VIII-A5 0.00 2,171,933.55 0.01 0.00 VIII-A6 0.00 11,230,506.65 1,070,076.66 0.00 VIII-A7 0.00 0.00 50,632.31 0.00 IV-X 0.00 0.00 42,785.13 0.00 VI-X 0.00 0.00 10,350.82 0.00 A-X 0.00 0.00 23,296.92 0.00 D-X 0.00 0.00 31,528.56 0.00 A-P 0.00 4,937,021.48 28,549.82 0.00 D-P 0.00 3,256,049.01 5,335.45 0.00 AR 0.00 0.00 50.23 0.00 AR-L 0.00 0.00 50.23 0.00 B1 0.00 1,440,271.61 9,457.63 0.00 B2 0.00 460,886.08 3,026.43 0.00 B3 0.00 230,442.54 1,513.21 0.00 B4 0.00 230,442.54 1,513.21 0.00 B5 0.00 115,220.77 756.61 0.00 B6 0.00 115,225.74 756.64 0.00 CB1 0.00 4,944,188.78 27,937.29 0.00 CB2 0.00 1,695,149.55 9,578.50 0.00 CB3 0.00 988,837.16 5,587.45 0.00 CB4 0.00 565,049.52 3,192.83 0.00 CB5 0.00 565,049.52 3,192.83 0.00 CB6 0.00 423,790.77 2,394.64 0.00 DB1 0.00 12,449,094.46 69,407.48 0.00 DB2 0.00 3,952,091.91 22,034.11 0.00 DB3 0.00 1,976,045.46 11,017.05 0.00 DB4 0.00 2,371,254.95 13,220.46 0.00 DB5 0.00 1,383,231.72 7,711.94 0.00 DB6 0.00 592,817.89 3,305.14 0.00 Totals 0.00 772,456,669.52 25,126,210.99 0.00 All distributions required by the ~~filing~~Pooling ~~obligation~~and ofServicing Agreement have been calculated by the ~~registrant~~Certificate ~~under~~Administrator ~~any~~on behalf of the ~~following provisions:~~Trustee.

~~Written~~Principal ~~communications~~Distribution ~~pursuant~~Statement toOriginal ~~Rule~~Beginning ~~425~~Scheduled ~~under~~Unscheduled ~~the~~Face ~~Securities~~Certificate ~~Act~~Principal Principal Realized Class Amount Balance Distribution Distribution Accretion Loss (171) ~~CFR~~I-A1 ~~230~~11,000,000.~~425)~~00 ~~Soliciting~~11,000,000.00 ~~material~~0.00 ~~pursuant~~0.00 to0.00 ~~Rule~~0.00 ~~14a~~I-12A2 ~~under~~98,328,889.00 ~~the~~98,328,889.00 ~~Exchange~~129,641.04 ~~Act~~3,322,475.28 ~~(17~~0.00 ~~CFR~~0.00 ~~240~~I-A3 3,350,000.~~14a~~00 3,350,000.00 0.00 0.00 0.00 0.00 I-A4 15,000,000.00 15,000,000.00 0.00 0.00 0.00 0.00 I-A5 1,778,204.00 1,778,204.00 0.00 0.00 0.00 0.00 I-A6 3,000,000.00 3,000,000.00 0.00 0.00 0.00 0.00 I-A7 412,500.00 412,500.00 0.00 0.00 0.00 0.00 I-A8 12),291,111.00 ~~Pre~~12,291,111.00 16,205.13 415,309.41 0.00 0.00 I-~~commencement~~A9 ~~communications~~0.00 ~~pursuant~~0.00 to0.00 ~~Rule~~0.00 ~~14d~~0.00 0.00 II-A1 56,973,373.00 56,973,373.00 51,863.03 467,410.96 0.00 0.00 III-A1 1,500,000.00 1,500,000.00 0.00 0.00 0.00 0.00 III-A2 3,000,000.00 3,000,000.00 0.00 0.00 0.00 0.00 III-A3 2~~(d)~~,750,000.00 ~~under~~2,750,000.00 ~~the~~0.00 ~~Exchange~~0.00 ~~Act~~0.00 ~~(17~~0.00 ~~CFR~~III-A4 ~~240~~6,350,000.~~14d~~00 6,350,000.00 0.00 0.00 0.00 0.00 III-A5 49,007,196.00 49,007,196.00 68,597.50 2~~(b))~~,307,076.90 ~~Pre~~0.00 0.00 IV-~~commencement~~A1 ~~communications~~145,000,000.00 ~~pursuant~~145,000,000.00 to183,542.06 ~~Rule~~3,528,615.71 ~~13e~~0.00 0.00 IV-A2 5,000,000.00 5,000,000.00 0.00 0.00 0.00 0.00 IV-A3 28,808,708.00 28,808,708.00 0.00 0.00 0.00 0.00 IV-A4 2,800,000.00 2,800,000.00 3,544.26 68,138.79 0.00 0.00 IV-A5 1,500,000.00 1,500,000.00 0.00 0.00 0.00 0.00 IV-A6 2,250,000.00 2,250,000.00 0.00 0.00 0.00 0.00 IV-A7 1,750,000.00 1,750,000.00 0.00 0.00 0.00 0.00 IV-A8 1,500,000.00 1,500,000.00 0.00 0.00 0.00 0.00 V-A1 65,797,000.00 65,797,000.00 4.72 1,135,055.85 0.00 0.00 V-A2 165,266.00 165,266.00 0.01 2,850.98 0.00 0.00 VI-A1 48,970,854.00 48,970,854.00 192,450.74 404,308.35 0.00 0.00 VII-A1 56,567,572.00 56,567,572.00 51,305.61 597,505.39 0.00 0.00 VIII-A1 13,000,000.00 13,000,000.00 0.00 0.00 0.00 0.00 VIII-A2 85,921,500.00 85,921,500.00 102,737.83 7,205,215.60 0.00 0.00 VIII-A3 343,750.00 343,750.00 0.00 0.00 0.00 0.00 VIII-A4 12,500,000.00 12,500,000.00 0.00 0.00 0.00 0.00 VIII-A5 2,161,576.00 2,161,576.00 0.00 0.00 (c10,357.54) ~~under~~0.00 ~~the~~VIII-A6 ~~Exchange~~12,274,500.00 ~~Act~~12,274,500.00 ~~(17~~14,676.83 ~~CFR~~1,029,316.51 ~~240~~0.~~13e~~00 0.00 VIII-A7 0.00 0.00 0.00 0.00 0.00 0.00 IV-X 0.00 0.00 0.00 0.00 0.00 0.00 VI-X 0.00 0.00 0.00 0.00 0.00 0.00 A-X 0.00 0.00 0.00 0.00 0.00 0.00 D-X 0.00 0.00 0.00 0.00 0.00 0.00 A-P 4,965,571.30 4,965,571.30 6,248.31 22,301.51 0.00 0.00 D-P 3,261,384.46 3,261,384.46 2,189.05 3,146.40 0.00 0.00 AR 50.00 50.00 1.88 48.12 0.00 0.00 AR-L 50.00 50.00 1.88 48.12 0.00 0.00 B1 1,443,637.00 1,443,637.00 3,365.39 0.00 0.00 0.00 B2 461,963.00 461,963.00 1,076.92 0.00 0.00 0.00 B3 230,981.00 230,981.00 538.46 0.00 0.00 0.00 B4 230,981.00 230,981.00 538.46 0.00 0.00 0.00 B5 115,490.00 115,490.00 269.23 0.00 0.00 0.00 B6 115,494.98 115,494.98 269.24 0.00 0.00 0.00 CB1 4,948,988.00 4,948,988.00 4,799.22 0.00 0.00 0.00 CB2 1,696,795.00 1,696,795.00 1,645.45 0.00 0.00 0.00 CB3 989,797.00 989,797.00 959.84 0.00 0.00 0.00 CB4 565,598.00 565,598.00 548.48 0.00 0.00 0.00 CB5 565,598.00 565,598.00 548.48 0.00 0.00 0.00 CB6 424,202.13 424,202.13 411.36 0.00 0.00 0.00 DB1 12,458,907.00 12,458,907.00 9,812.54 0.00 0.00 0.00 DB2 3,955,207.00 3,955,207.00 3,115.09 0.00 0.00 0.00 DB3 1,977,603.00 1,977,603.00 1,557.54 0.00 0.00 0.00 DB4 2,373,124.00 2,373,124.00 1,869.05 0.00 0.00 0.00 DB5 1,384,322.00 1,384,322.00 1,090.28 0.00 0.00 0.00 DB6 593,285.16 593,285.16 467.27 0.00 0.00 0.00 Totals 793,811,028.03 793,811,028.03 855,892.18 20,508,823.88 (c10,357.54) 0.00 (1) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

~~Item~~Principal 8Distribution Statement (continued) Total Ending Ending Total Principal Certificate Certificate Principal Class Reduction Balance Percentage Distribution I-A1 0.00 11,000,000.00 1.00000000 0.00 I-A2 3,452,116.31 94,876,772.69 0.96489215 3,452,116.31 I-A3 0.00 3,350,000.00 1.00000000 0.00 I-A4 0.00 15,000,000.00 1.00000000 0.00 I-A5 0.00 1,778,204.00 1.00000000 0.00 I-A6 0.00 3,000,000.00 1.00000000 0.00 I-A7 0.00 412,500.00 1.00000000 0.00 I-A8 431,514.53 11,859,596.47 0.96489215 431,514.53 I-A9 0.00 0.00 0.00000000 0.00 II-A1 519,273.99 56,454,099.01 0.99088567 519,273.99 III-A1 0.00 1,500,000.00 1.00000000 0.00 III-A2 0.00 3,000,000.00 1.00000000 0.00 III-A3 0.00 2,750,000.00 1.00000000 0.00 III-A4 0.00 6,350,000.00 1.00000000 0.00 III-A5 2,375,674.40 46,631,521.60 0.95152397 2,375,674.40 IV-A1 3,712,157.77 141,287,842.23 0.97439891 3,712,157.77 IV-A2 0.00 5,000,000.00 1.00000000 0.00 IV-A3 0.00 28,808,708.00 1.00000000 0.00 IV-A4 71,683.05 2,728,316.95 0.97439891 71,683.05 IV-A5 0.00 1,500,000.00 1.00000000 0.00 IV-A6 0.00 2,250,000.00 1.00000000 0.00 IV-A7 0.00 1,750,000.00 1.00000000 0.00 IV-A8 0.00 1,500,000.00 1.00000000 0.00 V-A1 1,135,060.58 64,661,939.42 0.98274905 1,135,060.58 V-A2 2,851.00 162,415.00 0.98274902 2,851.00 VI-A1 596,759.09 48,374,094.91 0.98781399 596,759.09 VII-A1 648,811.00 55,918,761.00 0.98853034 648,811.00 VIII-A1 0.00 13,000,000.00 1.00000000 0.00 VIII-A2 7,307,953.42 78,613,546.58 0.91494616 7,307,953.42 VIII-A3 0.00 343,750.00 1.00000000 0.00 VIII-A4 0.00 12,500,000.00 1.00000000 0.00 VIII-A5 (10,357.54) 2,171,933.55 1.00479167 (10,357.54) VIII-A6 1,043,993.35 11,230,506.65 0.91494616 1,043,993.35 VIII-A7 0.00 0.00 0.00000000 0.00 IV-X 0.00 0.00 0.00000000 0.00 VI-X 0.00 0.00 0.00000000 0.00 A-X 0.00 0.00 0.00000000 0.00 D-X 0.00 0.00 0.00000000 0.00 A-P 28,549.82 4,937,021.48 0.99425045 28,549.82 D-P 5,335.45 3,256,049.01 0.99836405 5,335.45 AR 50.00 0.00 0.00000000 50.00 AR-L 50.00 0.00 0.00000000 50.00 B1 3,365.39 1,440,271.61 0.99766881 3,365.39 B2 1,076.92 460,886.08 0.99766882 1,076.92 B3 538.46 230,442.54 0.99766881 538.46 B4 538.46 230,442.54 0.99766881 538.46 B5 269.23 115,220.77 0.99766880 269.23 B6 269.24 115,225.74 0.99766882 269.24 CB1 4,799.22 4,944,188.78 0.99903026 4,799.22 CB2 1,645.45 1,695,149.55 0.99903026 1,645.45 CB3 959.84 988,837.16 0.99903027 959.84 CB4 548.48 565,049.52 0.99903027 548.48 CB5 548.48 565,049.52 0.99903027 548.48 CB6 411.36 423,790.77 0.99903027 411.36 DB1 9,812.54 12,449,094.46 0.99921241 9,812.54 DB2 3,115.09 3,952,091.91 0.99921241 3,115.09 DB3 1,557.54 1,976,045.46 0.99921241 1,557.54 DB4 1,869.05 2,371,254.95 0.99921241 1,869.05 DB5 1,090.28 1,383,231.72 0.99921241 1,090.28 DB6 467.27 592,817.89 0.99921240 467.27 Totals 21,354,358.52 772,456,669.52 0.97309894 21,354,358.52

~~Other~~Principal ~~Events~~Distribution Factors Statement Original Beginning Scheduled Unscheduled Face Certificate Principal Principal Class (2) Amount Balance Distribution Distribution Accretion I-A1 11,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A2 98,328,889.00 1000.00000000 1.31844305 33.78941137 0.00000000 I-A3 3,350,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A4 15,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A5 1,778,204.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A6 3,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A7 412,500.00 1000.00000000 0.00000000 0.00000000 0.00000000 I-A8 12,291,111.00 1000.00000000 1.31844306 33.78941171 0.00000000 I-A9 0.00 0.00000000 0.00000000 0.00000000 0.00000000 II-A1 56,973,373.00 1000.00000000 0.91030296 8.20402471 0.00000000 III-A1 1,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A2 3,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A3 2,750,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A4 6,350,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 III-A5 49,007,196.00 1000.00000000 1.39974342 47.07628855 0.00000000 IV-A1 145,000,000.00 1000.00000000 1.26580731 24.33528076 0.00000000 IV-A2 5,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 IV-A3 28,808,708.00 1000.00000000 0.00000000 0.00000000 0.00000000 IV-A4 2,800,000.00 1000.00000000 1.26580714 24.33528214 0.00000000 IV-A5 1,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 IV-A6 2,250,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 IV-A7 1,750,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 IV-A8 1,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 V-A1 65,797,000.00 1000.00000000 0.00007174 17.25087542 0.00000000 V-A2 165,266.00 1000.00000000 0.00006051 17.25085620 0.00000000 VI-A1 48,970,854.00 1000.00000000 3.92990369 8.25610168 0.00000000 VII-A1 56,567,572.00 1000.00000000 0.90697918 10.56268404 0.00000000 VIII-A1 13,000,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 VIII-A2 85,921,500.00 1000.00000000 1.19571737 83.85812166 0.00000000 VIII-A3 343,750.00 1000.00000000 0.00000000 0.00000000 0.00000000 VIII-A4 12,500,000.00 1000.00000000 0.00000000 0.00000000 0.00000000 VIII-A5 2,161,576.00 1000.00000000 0.00000000 0.00000000 (4.79166127) VIII-A6 12,274,500.00 1000.00000000 1.19571714 83.85812131 0.00000000 VIII-A7 0.00 0.00000000 0.00000000 0.00000000 0.00000000 IV-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 VI-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 D-X 0.00 0.00000000 0.00000000 0.00000000 0.00000000 A-P 4,965,571.30 1000.00000000 1.25832651 4.49122742 0.00000000 D-P 3,261,384.46 1000.00000000 0.67120268 0.96474367 0.00000000 AR 50.00 1000.00000000 37.60000000 962.40000000 0.00000000 AR-L 50.00 1000.00000000 37.60000000 962.40000000 0.00000000 B1 1,443,637.00 1000.00000000 2.33118852 0.00000000 0.00000000 B2 461,963.00 1000.00000000 2.33118237 0.00000000 0.00000000 B3 230,981.00 1000.00000000 2.33118741 0.00000000 0.00000000 B4 230,981.00 1000.00000000 2.33118741 0.00000000 0.00000000 B5 115,490.00 1000.00000000 2.33119751 0.00000000 0.00000000 B6 115,494.98 1000.00000000 2.33118357 0.00000000 0.00000000 CB1 4,948,988.00 1000.00000000 0.96973765 0.00000000 0.00000000 CB2 1,696,795.00 1000.00000000 0.96974001 0.00000000 0.00000000 CB3 989,797.00 1000.00000000 0.96973420 0.00000000 0.00000000 CB4 565,598.00 1000.00000000 0.96973469 0.00000000 0.00000000 CB5 565,598.00 1000.00000000 0.96973469 0.00000000 0.00000000 CB6 424,202.13 1000.00000000 0.96972639 0.00000000 0.00000000 DB1 12,458,907.00 1000.00000000 0.78759236 0.00000000 0.00000000 DB2 3,955,207.00 1000.00000000 0.78759215 0.00000000 0.00000000 DB3 1,977,603.00 1000.00000000 0.78758982 0.00000000 0.00000000 DB4 2,373,124.00 1000.00000000 0.78759053 0.00000000 0.00000000 DB5 1,384,322.00 1000.00000000 0.78759133 0.00000000 0.00000000 DB6 593,285.16 1000.00000000 0.78759765 0.00000000 0.00000000

~~Credit~~Principal ~~Suisse~~Distribution ~~First~~Factors ~~Boston~~Statement ~~Mortgage~~(continued) ~~Securities~~Total ~~Corp.~~Ending ~~(the~~Ending ~~“Company”)~~Total ~~entered~~Realized ~~into~~Principal aCertificate ~~Pooling~~Certificate ~~and~~Principal ~~Servicing~~Class ~~Agreement~~Loss ~~dated~~(3) asReduction ofBalance ~~November~~Percentage Distribution I-A1 0.00000000 0.00000000 1,000.00000000 ~~2004(the~~1.00000000 ~~“Agreement”)~~0.00000000 ~~among~~I-A2 ~~the~~0.00000000 ~~Credit~~35.10785432 ~~Suisse~~964.89214568 ~~First~~0.96489215 ~~Boston~~35.10785432 ~~Mortgage~~I-A3 ~~Securities~~0.00000000 ~~Corp~~0.00000000 ~~as depositor~~1,000.00000000 ~~(the~~1.00000000 ~~“Depositor”),~~0.00000000 UI-A4 0.S00000000 0.00000000 ~~Bank~~1,000.00000000 ~~National~~1.00000000 ~~Association~~0.00000000 I-A5 0.00000000 0.00000000 1,000.00000000 as1.00000000 ~~trustee~~0.00000000 ~~(in~~I-A6 ~~such~~0.00000000 ~~capacity~~0.00000000 1,000.00000000 ~~the~~1.00000000 ~~“Trustee”),~~0.00000000 ~~Wells~~I-A7 ~~Fargo~~0.00000000 ~~Bank~~0.00000000 1,000.00000000 N1.A00000000 0.00000000 I-A8 0.00000000 35.10785396 964.89214604 0.96489215 35.10785396 I-A9 0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 II-A1 0.00000000 9.11432767 990.88567233 0.99088567 9.11432767 III-A1 0.00000000 0.00000000 1,000.00000000 as1.00000000 a0.00000000 ~~servicer~~III-A2 ~~(in~~0.00000000 ~~such~~0.00000000 ~~capacity~~1,000.00000000 a1.00000000 ~~“Serivcer”)~~0.00000000 III-A3 0.00000000 0.00000000 1,000.00000000 ~~master~~1.00000000 ~~servicer~~0.00000000 ~~(in~~III-A4 ~~such~~0.00000000 ~~capacity~~0.00000000 1,000.00000000 ~~the~~1.00000000 ~~“Master~~0.00000000 ~~Servicer”)~~III-A5 ~~and~~0.00000000 as48.47603197 ~~trust~~951.52396803 ~~administrator~~0.95152397 ~~(in~~48.47603197 ~~such~~IV-A1 ~~capacity,~~0.00000000 ~~the~~25.60108807 ~~“Trust~~974.39891193 ~~Administrator”),~~0.97439891 ~~DLJ~~25.60108807 ~~Mortgage~~IV-A2 ~~Capital~~0.00000000 0.00000000 1,000.00000000 ~~Inc~~1.00000000 0.00000000 IV-A3 0.00000000 0.00000000 1,000.00000000 as1.00000000 a0.00000000 ~~seller~~IV-A4 ~~(in~~0.00000000 ~~such~~25.60108929 ~~capacity~~974.39891071 0.97439891 25.60108929 IV-A5 0.00000000 0.00000000 1,000.00000000 a1.00000000 ~~“Seller”)~~0.00000000 IV-A6 0.00000000 0.00000000 1,000.00000000 ~~Washington~~1.00000000 ~~Mutual~~0.00000000 ~~Mortgage~~IV-A7 ~~Securities~~0.00000000 ~~Corp~~0.00000000 1,000.00000000 as1.00000000 a0.00000000 ~~seller~~IV-A8 ~~(in~~0.00000000 ~~such~~0.00000000 ~~capacity~~1,000.00000000 a1.00000000 ~~“Seller”)~~0.00000000 ~~and~~V-A1 a0.00000000 ~~servicer~~17.25094731 ~~(in~~982.74905269 ~~such~~0.98274905 ~~capacity,~~17.25094731 aV-A2 ~~“Servicer”),~~0.00000000 ~~GreenPoint~~17.25097721 ~~Mortgage~~982.74902279 ~~Funding,~~0.98274902 ~~Inc~~17.25097721 asVI-A1 a0.00000000 ~~seller~~12.18600537 ~~and~~987.81399463 a0.98781399 ~~servicer~~12.18600537 asVII-A1 a0.00000000 ~~seller~~11.46966322 ~~(in~~988.53033678 ~~such~~0.98853034 ~~capacity~~11.46966322 VIII-A1 0.00000000 0.00000000 1,000.00000000 a1.00000000 ~~“Seller”)~~0.00000000 ~~and~~VIII-A2 a0.00000000 ~~servicer~~85.05383891 ~~(in~~914.94616109 ~~such~~0.91494616 ~~capacity~~85.05383891 VIII-A3 0.00000000 0.00000000 1,000.00000000 a1.00000000 ~~“Servicer”)~~0.00000000 ~~and Select~~VIII-A4 ~~Portfolio~~0.00000000 ~~Servicing~~0.00000000 1,000.00000000 ~~Inc~~1.00000000 0.00000000 VIII-A5 0.00000000 (~~“SPS”~~4.79166127) 1,004.79166590 as1.00479167 a(4.79166127) ~~servicer~~VIII-A6 ~~and~~0.00000000 ~~special~~85.05383926 ~~servicer~~914.94616074 as0.91494616 a85.05383926 ~~servicer~~VIII-A7 ~~(in~~0.00000000 ~~such~~0.00000000 ~~capacity,~~0.00000000 a0.00000000 ~~“Serivcer”)~~0.00000000 ~~and~~IV-X as0.00000000 ~~special~~0.00000000 ~~servicer~~0.00000000 ~~(in~~0.00000000 ~~such~~0.00000000 ~~capacity,~~VI-X ~~the~~0.00000000 ~~“Special~~0.00000000 ~~Servicer”)~~0.00000000 ~~providing~~0.00000000 ~~for~~0.00000000 ~~the~~A-X ~~issuance~~0.00000000 of0.00000000 ~~the~~0.00000000 ~~CSFB~~0.00000000 ~~Mortgage~~0.00000000 D-~~Backed~~X ~~Pass~~0.00000000 0.00000000 0.00000000 0.00000000 0.00000000 A-~~Through~~P ~~Certificates,~~0.00000000 ~~Series~~5.74955393 ~~2004~~994.25044607 0.99425045 5.74955393 D-8P 0. ~~The~~00000000 ~~Certificates~~1.63594635 ~~were~~998.36405365 ~~issued~~0.99836405 on1.63594635 ~~November~~AR 290.00000000 1,000.00000000 ~~2004~~0.00000000 ~~The~~0.00000000 ~~Pooling~~1,000.00000000 ~~and~~AR-L ~~Servicing~~0.00000000 ~~Agreement~~1,000.00000000 is0.00000000 ~~annexed~~0.00000000 ~~hereto~~1,000.00000000 asB1 ~~Exhibit~~0.00000000 992.133118852 997.66881148 0.99766881 2.33118852 B2 0.00000000 2.33118237 997.66881763 0.99766882 2.33118237 B3 0.00000000 2.33118741 997.66881259 0.99766881 2.33118741 B4 0.00000000 2.33118741 997.66881259 0.99766881 2.33118741 B5 0.00000000 2.33119751 997.66880249 0.99766880 2.33119751 B6 0.00000000 2.33118357 997.66881643 0.99766882 2.33118357 CB1 0.00000000 0.96973765 999.03026235 0.99903026 0.96973765 CB2 0.00000000 0.96974001 999.03025999 0.99903026 0.96974001 CB3 0.00000000 0.96973420 999.03026580 0.99903027 0.96973420 CB4 0.00000000 0.96973469 999.03026531 0.99903027 0.96973469 CB5 0.00000000 0.96973469 999.03026531 0.99903027 0.96973469 CB6 0.00000000 0.96972639 999.03027361 0.99903027 0.96972639 DB1 0.00000000 0.78759236 999.21240764 0.99921241 0.78759236 DB2 0.00000000 0.78759215 999.21240785 0.99921241 0.78759215 DB3 0.00000000 0.78758982 999.21241018 0.99921241 0.78758982 DB4 0.00000000 0.78759053 999.21240947 0.99921241 0.78759053 DB5 0.00000000 0.78759133 999.21240867 0.99921241 0.78759133 DB6 0.00000000 0.78759765 999.21240235 0.99921240 0.78759765 (3) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

~~Item~~Interest Distribution Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class Amount Rate Balance Interest Shortfall Shortfall I-A1 11,000,000.00 5.50000% 11,000,000.00 50,416.67 0.00 0.00 I-A2 98,328,889.00 5.25000% 98,328,889.00 430,188.89 0.00 0.00 I-A3 3,350,000.00 5.50000% 3,350,000.00 15,354.17 0.00 0.00 I-A4 15,000,000.00 5.50000% 15,000,000.00 68,750.00 0.00 0.00 I-A5 1,778,204.00 5.50000% 1,778,204.00 8,150.10 0.00 0.00 I-A6 3,000,000.00 5.50000% 3,000,000.00 13,750.00 0.00 0.00 I-A7 412,500.00 5.50000% 412,500.00 1,890.63 0.00 0.00 I-A8 12,291,111.00 2.55000% 12,291,111.00 26,118.61 0.00 0.00 I-A9 0.00 4.95000% 12,291,111.00 50,700.83 0.00 0.00 II-A1 56,973,373.00 6.00000% 56,973,373.00 284,866.86 0.00 0.00 III-A1 1,500,000.00 5.50000% 1,500,000.00 6,875.00 0.00 0.00 III-A2 3,000,000.00 5.50000% 3,000,000.00 13,750.00 0.00 0.00 III-A3 2,750,000.00 5.50000% 2,750,000.00 12,604.17 0.00 0.00 III-A4 6,350,000.00 5.50000% 6,350,000.00 29,104.17 0.00 0.00 III-A5 49,007,196.00 5.50000% 49,007,196.00 224,616.32 0.00 0.00 IV-A1 145,000,000.00 5.50000% 145,000,000.00 664,583.33 0.00 0.00 IV-A2 5,000,000.00 5.50000% 5,000,000.00 22,916.67 0.00 0.00 IV-A3 28,808,708.00 5.50000% 28,808,708.00 132,039.91 0.00 0.00 IV-A4 2,800,000.00 5.50000% 2,800,000.00 12,833.33 0.00 0.00 IV-A5 1,500,000.00 5.25000% 1,500,000.00 6,562.50 0.00 0.00 IV-A6 2,250,000.00 5.50000% 2,250,000.00 10,312.50 0.00 0.00 IV-A7 1,750,000.00 5.50000% 1,750,000.00 8,020.83 0.00 0.00 IV-A8 1,500,000.00 5.75000% 1,500,000.00 7,187.50 0.00 0.00 V-A1 65,797,000.00 6.00000% 65,797,000.00 328,985.00 0.00 0.00 V-A2 165,266.00 6.00000% 165,266.00 826.33 0.00 0.00 VI-A1 48,970,854.00 4.50000% 48,970,854.00 183,640.70 0.00 0.00 VII-A1 56,567,572.00 6.00000% 56,567,572.00 282,837.86 0.00 0.00 VIII-A1 13,000,000.00 5.75000% 13,000,000.00 62,291.67 0.00 0.00 VIII-A2 85,921,500.00 5.50000% 85,921,500.00 393,806.88 0.00 0.00 VIII-A3 343,750.00 5.75000% 343,750.00 1,647.14 0.00 0.00 VIII-A4 12,500,000.00 5.75000% 12,500,000.00 59,895.83 0.00 0.00 VIII-A5 2,161,576.00 5.75000% 2,161,576.00 10,357.55 0.00 0.00 VIII-A6 12,274,500.00 2.55000% 12,274,500.00 26,083.31 0.00 0.00 VIII-A7 0.00 4.95000% 12,274,500.00 50,632.31 0.00 0.00 IV-X 0.00 5.50000% 9,343,320.96 42,823.55 0.00 0.00 VI-X 0.00 4.50000% 2,760,219.36 10,350.82 0.00 0.00 A-X 0.00 5.50000% 5,087,954.60 23,319.79 0.00 0.00 D-X 0.00 6.00000% 6,305,712.43 31,528.56 0.00 0.00 A-P 4,965,571.30 0.00000% 4,965,571.30 0.00 0.00 0.00 D-P 3,261,384.46 0.00000% 3,261,384.46 0.00 0.00 0.00 AR 50.00 5.50000% 50.00 0.23 0.00 0.00 AR-L 50.00 5.50000% 50.00 0.23 0.00 0.00 B1 1,443,637.00 5.06408% 1,443,637.00 6,092.24 0.00 0.00 B2 461,963.00 5.06408% 461,963.00 1,949.51 0.00 0.00 B3 230,981.00 5.06408% 230,981.00 974.75 0.00 0.00 B4 230,981.00 5.06408% 230,981.00 974.75 0.00 0.00 B5 115,490.00 5.06408% 115,490.00 487.38 0.00 0.00 B6 115,494.98 5.06408% 115,494.98 487.40 0.00 0.00 CB1 4,948,988.00 5.61589% 4,948,988.00 23,160.80 0.00 0.00 CB2 1,696,795.00 5.61589% 1,696,795.00 7,940.84 0.00 0.00 CB3 989,797.00 5.61589% 989,797.00 4,632.16 0.00 0.00 CB4 565,598.00 5.61589% 565,598.00 2,646.95 0.00 0.00 CB5 565,598.00 5.61589% 565,598.00 2,646.95 0.00 0.00 CB6 424,202.13 5.61589% 424,202.13 1,985.23 0.00 0.00 DB1 12,458,907.00 5.74514% 12,458,907.00 59,648.45 0.00 0.00 DB2 3,955,207.00 5.74514% 3,955,207.00 18,936.01 0. ~~Financial~~00 ~~Statements~~0.00 ~~and~~DB3 ~~Exhibits~~1,977,603.00 5.74514% 1,977,603.00 9,468.00 0.00 0.00 DB4 2,373,124.00 5.74514% 2,373,124.00 11,361.60 0.00 0.00 DB5 1,384,322.00 5.74514% 1,384,322.00 6,627.60 0.00 0.00 DB6 593,285.16 5.74514% 593,285.16 2,840.42 0.00 0.00 Totals 793,811,028.03 3,773,481.79 0.00 0.00

Interest Distribution Statement (acontinued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (4) Distribution Shortfall Balance I-A1 49.46 0.00 50,367.21 0.00 11,000,000.00 I-A2 422.01 0.00 429,766.87 0.00 94,876,772.69 I-A3 15.06 0.00 15,339.10 0.00 3,350,000.00 I-A4 67.44 0.00 68,682.56 0.00 15,000,000.00 I-A5 8.00 0.00 8,142.11 0.00 1,778,204.00 I-A6 13.49 0.00 13,736.51 0.00 3,000,000.00 I-A7 1.85 0.00 1,888.77 0.00 412,500.00 I-A8 25.62 0.00 26,092.99 0.00 11,859,596.47 I-A9 49.74 0.00 50,651.10 0.00 11,859,596.47 II-A1 0.00 0.00 284,866.87 0.00 56,454,099.01 III-A1 0.00 0.00 6,875.00 0.00 1,500,000.00 III-A2 0.00 0.00 13,750.00 0.00 3,000,000.00 III-A3 0.00 0.00 12,604.17 0.00 2,750,000.00 III-A4 0.00 0.00 29,104.17 0.00 6,350,000.00 III-A5 0.00 0.00 224,616.32 0.00 46,631,521.60 IV-A1 596.17 0.00 663,987.16 0.00 141,287,842.23 IV-A2 20.56 0.00 22,896.11 0.00 5,000,000.00 IV-A3 118.45 0.00 131,921.46 0.00 28,808,708.00 IV-A4 11.51 0.00 12,821.82 0.00 2,728,316.95 IV-A5 5.89 0.00 6,556.61 0.00 1,500,000.00 IV-A6 9.25 0.00 10,303.25 0.00 2,250,000.00 IV-A7 7.20 0.00 8,013.64 0.00 1,750,000.00 IV-A8 6.45 0.00 7,181.05 0.00 1,500,000.00 V-A1 0.00 0.00 328,985.00 0.00 64,661,939.42 V-A2 0.00 0.00 826.33 0.00 162,415.00 VI-A1 0.00 0.00 183,640.70 0.00 48,374,094.91 VII-A1 0.00 0.00 282,837.86 0.00 55,918,761.00 VIII-A1 0.00 0.00 62,291.67 0.00 13,000,000.00 VIII-A2 0.00 0.00 393,806.88 0.00 78,613,546.58 VIII-A3 0.00 0.00 1,647.14 0.00 343,750.00 VIII-A4 0.00 0.00 59,895.83 0.00 12,500,000.00 VIII-A5 0.00 0.00 10,357.55 0.00 2,171,933.55 VIII-A6 0.00 0.00 26,083.31 0.00 11,230,506.65 VIII-A7 0.00 0.00 50,632.31 0.00 11,230,506.65 IV-X 38.42 0.00 42,785.13 0.00 9,138,665.51 VI-X 0.00 0.00 10,350.82 0.00 2,686,739.46 A-X 22.88 0.00 23,296.92 0.00 4,786,905.52 D-X 0.00 0.00 31,528.56 0.00 6,247,488.85 A-P 0.00 0.00 0.00 0.00 4,937,021.48 D-P 0.00 0.00 0.00 0.00 3,256,049.01 AR 0.00 0.00 0.23 0.00 0.00 AR-L 0.00 0.00 0.23 0.00 0.00 B1 0.00 0.00 6,092.24 0.00 1,440,271.61 B2 0.00 0.00 1,949.51 0.00 460,886.08 B3 0.00 0.00 974.75 0.00 230,442.54 B4 0.00 0.00 974.75 0.00 230,442.54 B5 0.00 0.00 487.38 0.00 115,220.77 B6 0.00 0.00 487.40 0.00 115,225.74 CB1 22.72 0.00 23,138.07 0.00 4,944,188.78 CB2 7.79 0.00 7,933.05 0.00 1,695,149.55 CB3 4.54 0.00 4,627.61 0.00 988,837.16 CB4 2.60 0.00 2,644.35 0.00 565,049.52 CB5 2.60 0.00 2,644.35 0.00 565,049.52 CB6 1.95 0.00 1,983.28 0.00 423,790.77 DB1 53.51 0.00 59,594.94 0.00 12,449,094.46 DB2 16.99 0.00 18,919.02 0.00 3,952,091.91 DB3 8.49 0.00 9,459.51 0.00 1,976,045.46 DB4 10.19 0.00 11,351.41 0.00 2,371,254.95 DB5 5.95 0.00 6,621.66 0.00 1,383,231.72 DB6 2.55 0.00 2,837.87 0.00 592,817.89 Totals 1,629.33 0.00 3,771,852.47 0.00 (4) Amount Does Not Include Excess Special Hazard, Bankruptcy, or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

~~Not~~Interest ~~applicable~~Distribution Factors Statement Beginning Payment of Original Current Certificate/ Current Unpaid Current Face Certificate Notional Accrued Interest Interest Class (5) Amount Rate Balance Interest Shortfall Shortfall I-A1 11,000,000.00 5.50000% 1000.00000000 4.58333364 0.00000000 0.00000000 I-A2 98,328,889.00 5.25000% 1000.00000000 4.37500001 0.00000000 0.00000000 I-A3 3,350,000.00 5.50000% 1000.00000000 4.58333433 0.00000000 0.00000000 I-A4 15,000,000.00 5.50000% 1000.00000000 4.58333333 0.00000000 0.00000000 I-A5 1,778,204.00 5.50000% 1000.00000000 4.58333240 0.00000000 0.00000000 I-A6 3,000,000.00 5.50000% 1000.00000000 4.58333333 0.00000000 0.00000000 I-A7 412,500.00 5.50000% 1000.00000000 4.58334545 0.00000000 0.00000000 I-A8 12,291,111.00 2.55000% 1000.00000000 2.12499993 0.00000000 0.00000000 I-A9 0.00 4.95000% 1000.00000000 4.12499977 0.00000000 0.00000000 II-A1 56,973,373.00 6.00000% 1000.00000000 4.99999991 0.00000000 0.00000000 III-A1 1,500,000.00 5.50000% 1000.00000000 4.58333333 0.00000000 0.00000000 III-A2 3,000,000.00 5.50000% 1000.00000000 4.58333333 0.00000000 0.00000000 III-A3 2,750,000.00 5.50000% 1000.00000000 4.58333455 0.00000000 0.00000000 III-A4 6,350,000.00 5.50000% 1000.00000000 4.58333386 0.00000000 0.00000000 III-A5 49,007,196.00 5.50000% 1000.00000000 4.58333344 0.00000000 0.00000000 IV-A1 145,000,000.00 5.50000% 1000.00000000 4.58333331 0.00000000 0.00000000 IV-A2 5,000,000.00 5.50000% 1000.00000000 4.58333400 0.00000000 0.00000000 IV-A3 28,808,708.00 5.50000% 1000.00000000 4.58333328 0.00000000 0.00000000 IV-A4 2,800,000.00 5.50000% 1000.00000000 4.58333214 0.00000000 0.00000000 IV-A5 1,500,000.00 5.25000% 1000.00000000 4.37500000 0.00000000 0.00000000 IV-A6 2,250,000.00 5.50000% 1000.00000000 4.58333333 0.00000000 0.00000000 IV-A7 1,750,000.00 5.50000% 1000.00000000 4.58333143 0.00000000 0.00000000 IV-A8 1,500,000.00 5.75000% 1000.00000000 4.79166667 0.00000000 0.00000000 V-A1 65,797,000.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 V-A2 165,266.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 VI-A1 48,970,854.00 4.50000% 1000.00000000 3.74999995 0.00000000 0.00000000 VII-A1 56,567,572.00 6.00000% 1000.00000000 5.00000000 0.00000000 0.00000000 VIII-A1 13,000,000.00 5.75000% 1000.00000000 4.79166692 0.00000000 0.00000000 VIII-A2 85,921,500.00 5.50000% 1000.00000000 4.58333339 0.00000000 0.00000000 VIII-A3 343,750.00 5.75000% 1000.00000000 4.79168000 0.00000000 0.00000000 VIII-A4 12,500,000.00 5.75000% 1000.00000000 4.79166640 0.00000000 0.00000000 VIII-A5 2,161,576.00 5.75000% 1000.00000000 4.79166590 0.00000000 0.00000000 VIII-A6 12,274,500.00 2.55000% 1000.00000000 2.12499980 0.00000000 0.00000000 VIII-A7 0.00 4.95000% 1000.00000000 4.12499980 0.00000000 0.00000000 IV-X 0.00 5.50000% 1000.00000000 4.58333286 0.00000000 0.00000000 VI-X 0.00 4.50000% 999.99999638 3.74999904 0.00000000 0.00000000 A-X 0.00 5.50000% 1000.00000000 4.58333296 0.00000000 0.00000000 D-X 0.00 6.00000% 1000.00000000 4.99999966 0.00000000 0.00000000 A-P 4,965,571.30 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 D-P 3,261,384.46 0.00000% 1000.00000000 0.00000000 0.00000000 0.00000000 AR 50.00 5.50000% 1000.00000000 4.60000000 0.00000000 0.00000000 AR-L 50.00 5.50000% 1000.00000000 4.60000000 0.00000000 0.00000000 B1 1,443,637.00 5.06408% 1000.00000000 4.22006363 0.00000000 0.00000000 B2 461,963.00 5.06408% 1000.00000000 4.22005658 0.00000000 0.00000000 B3 230,981.00 5.06408% 1000.00000000 4.22004407 0.00000000 0.00000000 B4 230,981.00 5.06408% 1000.00000000 4.22004407 0.00000000 0.00000000 B5 115,490.00 5.06408% 1000.00000000 4.22010564 0.00000000 0.00000000 B6 115,494.98 5.06408% 1000.00000000 4.22009684 0.00000000 0.00000000 CB1 4,948,988.00 5.61589% 1000.00000000 4.67990628 0.00000000 0.00000000 CB2 1,696,795.00 5.61589% 1000.00000000 4.67990535 0.00000000 0.00000000 CB3 989,797.00 5.61589% 1000.00000000 4.67990911 0.00000000 0.00000000 CB4 565,598.00 5.61589% 1000.00000000 4.67991400 0.00000000 0.00000000 CB5 565,598.00 5.61589% 1000.00000000 4.67991400 0.00000000 0.00000000 CB6 424,202.13 5.61589% 1000.00000000 4.67991521 0.00000000 0.00000000 DB1 12,458,907.00 5.74514% 1000.00000000 4.78761500 0.00000000 0.00000000 DB2 3,955,207.00 5.74514% 1000.00000000 4.78761541 0.00000000 0.00000000 DB3 1,977,603.00 5.74514% 1000.00000000 4.78761410 0.00000000 0.00000000 DB4 2,373,124.00 5.74514% 1000.00000000 4.78761329 0.00000000 0.00000000 DB5 1,384,322.00 5.74514% 1000.00000000 4.78761444 0.00000000 0.00000000 DB6 593,285.16 5.74514% 1000.00000000 4.78761343 0.00000000 0.00000000 (5) Per $1 denomination.

Interest Distribution Factors Statement (bcontinued) Remaining Ending Non-Supported Total Unpaid Certificate/ Interest Realized Interest Interest Notional Class Shortfall Losses (6) Distribution Shortfall Balance I-A1 0.00449636 0.00000000 4.57883727 0.00000000 1000.00000000 I-A2 0.00429182 0.00000000 4.37070808 0.00000000 964.89214568 I-A3 0.00449552 0.00000000 4.57883582 0.00000000 1000.00000000 I-A4 0.00449600 0.00000000 4.57883733 0.00000000 1000.00000000 I-A5 0.00449892 0.00000000 4.57883910 0.00000000 1000.00000000 I-A6 0.00449667 0.00000000 4.57883667 0.00000000 1000.00000000 I-A7 0.00448485 0.00000000 4.57883636 0.00000000 1000.00000000 I-A8 0.00208443 0.00000000 2.12291550 0.00000000 964.89214604 I-A9 0.00404683 0.00000000 4.12095375 0.00000000 964.89214604 II-A1 0.00000000 0.00000000 5.00000009 0.00000000 990.88567233 III-A1 0.00000000 0.00000000 4.58333333 0.00000000 1000.00000000 III-A2 0.00000000 0.00000000 4.58333333 0.00000000 1000.00000000 III-A3 0.00000000 0.00000000 4.58333455 0.00000000 1000.00000000 III-A4 0.00000000 0.00000000 4.58333386 0.00000000 1000.00000000 III-A5 0.00000000 0.00000000 4.58333344 0.00000000 951.52396803 IV-A1 0.00411152 0.00000000 4.57922179 0.00000000 974.39891193 IV-A2 0.00411200 0.00000000 4.57922200 0.00000000 1000.00000000 IV-A3 0.00411160 0.00000000 4.57922167 0.00000000 1000.00000000 IV-A4 0.00411071 0.00000000 4.57922143 0.00000000 974.39891071 IV-A5 0.00392667 0.00000000 4.37107333 0.00000000 1000.00000000 IV-A6 0.00411111 0.00000000 4.57922222 0.00000000 1000.00000000 IV-A7 0.00411429 0.00000000 4.57922286 0.00000000 1000.00000000 IV-A8 0.00430000 0.00000000 4.78736667 0.00000000 1000.00000000 V-A1 0.00000000 0.00000000 5.00000000 0.00000000 982.74905269 V-A2 0.00000000 0.00000000 5.00000000 0.00000000 982.74902279 VI-A1 0.00000000 0.00000000 3.74999995 0.00000000 987.81399463 VII-A1 0.00000000 0.00000000 5.00000000 0.00000000 988.53033678 VIII-A1 0.00000000 0.00000000 4.79166692 0.00000000 1000.00000000 VIII-A2 0.00000000 0.00000000 4.58333339 0.00000000 914.94616109 VIII-A3 0.00000000 0.00000000 4.79168000 0.00000000 1000.00000000 VIII-A4 0.00000000 0.00000000 4.79166640 0.00000000 1000.00000000 VIII-A5 0.00000000 0.00000000 4.79166590 0.00000000 1004.79166590 VIII-A6 0.00000000 0.00000000 2.12499980 0.00000000 914.94616074 VIII-A7 0.00000000 0.00000000 4.12499980 0.00000000 914.94616074 IV-X 0.00411203 0.00000000 4.57922083 0.00000000 978.09606982 VI-X 0.00000000 0.00000000 3.74999904 0.00000000 973.37896009 A-X 0.00449690 0.00000000 4.57883803 0.00000000 940.83102078 D-X 0.00000000 0.00000000 4.99999966 0.00000000 990.76653421 A-P 0.00000000 0.00000000 0.00000000 0.00000000 994.25044607 D-P 0.00000000 0.00000000 0.00000000 0.00000000 998.36405365 AR 0.00000000 0.00000000 4.60000000 0.00000000 0.00000000 AR-L 0.00000000 0.00000000 4.60000000 0.00000000 0.00000000 B1 0.00000000 0.00000000 4.22006363 0.00000000 997.66881148 B2 0.00000000 0.00000000 4.22005658 0.00000000 997.66881763 B3 0.00000000 0.00000000 4.22004407 0.00000000 997.66881259 B4 0.00000000 0.00000000 4.22004407 0.00000000 997.66881259 B5 0.00000000 0.00000000 4.22010564 0.00000000 997.66880249 B6 0.00000000 0.00000000 4.22009684 0.00000000 997.66881643 CB1 0.00459084 0.00000000 4.67531342 0.00000000 999.03026235 CB2 0.00459101 0.00000000 4.67531434 0.00000000 999.03025999 CB3 0.00458680 0.00000000 4.67531221 0.00000000 999.03026580 CB4 0.00459690 0.00000000 4.67531710 0.00000000 999.03026531 CB5 0.00459690 0.00000000 4.67531710 0.00000000 999.03026531 CB6 0.00459687 0.00000000 4.67531834 0.00000000 999.03027361 DB1 0.00429492 0.00000000 4.78332008 0.00000000 999.21240764 DB2 0.00429560 0.00000000 4.78331981 0.00000000 999.21240785 DB3 0.00429308 0.00000000 4.78332102 0.00000000 999.21241018 DB4 0.00429392 0.00000000 4.78331937 0.00000000 999.21240947 DB5 0.00429813 0.00000000 4.78332353 0.00000000 999.21240867 DB6 0.00429810 0.00000000 4.78331533 0.00000000 999.21240235 (6) Amount Does Not Include Excess Special Hazard, Bankruptcy,or Fraud Losses Unless Otherwise Disclosed. Please Refer to the Prospectus Supplement for a Full Description.

~~Not~~CERTIFICATEHOLDER ~~applicable~~ACCOUNT STATEMENT CERTIFICATE ACCOUNT Beginning Balance 0.00 Deposits Payments of Interest and Principal 25,343,622.60 Liquidations, Insurance Proceeds, Reserve Funds 0.00 Proceeds from Repurchased Loans 0.00 Other Amounts (Servicer Advances) 1,785.58 Realized Loss (Gains, Subsequent Expenses & Recoveries) 0.00 Prepayment Penalties 0.00 Total Deposits 25,345,408.18 Withdrawals Reimbursement for Servicer Advances 0.00 Payment of Service Fee 219,197.19 Payment of Interest and Principal 25,126,210.99 Total Withdrawals (Pool Distribution Amount) 25,345,408.18 Ending Balance 0.00

~~(c)~~PREPAYMENT/CURTAILMENT INTEREST SHORTFALL Total Prepayment/Curtailment Interest Shortfall 0.00 Servicing Fee Support 0.00 Non-Supported Prepayment/Curtailment Interest Shortfall 1,629.33

~~Exhibits:~~SERVICING FEES Gross Servicing Fee 165,377.31 External MS Fee 12,018.59 PMI Fee 1,816.06 Servicer Fry 36,677.72 Trust Administrator Fee 3,307.51 Supported Prepayment/Curtailment Interest Shortfall 0.00 Net Servicing Fee 219,197.19

99.1

~~The~~COLLATERAL ~~Pooling~~STATEMENT ~~and~~Collateral ~~Servicing~~Description ~~Agreement~~Mixed ~~dated~~Fixed asWeighted ofAverage ~~November~~Gross 1,Coupon ~~2004~~6.035712% Weighted Average Net Coupon 5.785712% Weighted Average Pass-Through Rate 5.704353% Weighted Average Maturity(Stepdown Calculation ) 359 Beginning Scheduled Collateral Loan Count 2,312 byNumber ~~and~~Of ~~among~~Loans ~~the~~Paid ~~Company~~In Full 41 Ending Scheduled Collateral Loan Count 2,271 ~~the~~Beginning ~~Sellers~~Scheduled Collateral Balance 793,811,028.03 ~~the~~Ending ~~Servicers~~Scheduled Collateral Balance 772,456,669.51 ~~the~~Ending ~~Special~~Actual ~~Servicer~~Collateral Balance at 30-Nov-2004 772,914,172.59 ~~the~~Monthly ~~Master~~P ~~Servicer~~&I Constant 4,848,425.78 ~~the~~Special ~~Trustee~~Servicing ~~and~~Fee ~~the~~0.00 ~~Trust~~Prepayment ~~Administrator~~Penalties 0.00 Realized Loss Amount 0.00 Cumulative Realized Loss 0.00 Scheduled Principal 855,746.58 Unscheduled Principal 20,498,611.94

~~SIGNATURES~~Group Level Collateral Statement Group G1 30Y Conf AltA G2 30Y Conf AltA G3 30Y Conf AltA Collateral Description Mixed Fixed Mixed Fixed Mixed Fixed Weighted Average Coupon Rate 5.854308 6.409354 5.836391 Weighted Average Net Rate 5.604308 6.159354 5.586391 Weighted Average Maturity 359 359 357 Beginning Loan Count 289 395 131 Loans Paid In Full 7 2 4 Ending Loan Count 282 393 127 Beginning Scheduled Balance 151,707,354.96 61,636,590.06 65,145,652.03 Ending scheduled Balance 147,816,819.65 61,112,756.96 62,767,121.31 Record Date 11/30/2004 11/30/2004 11/30/2004 Principal And Interest Constant 892,728.24 385,432.28 388,279.96 Scheduled Principal 152,610.27 56,223.34 71,433.72 Unscheduled Principal 3,737,925.04 467,609.76 2,307,097.00 Scheduled Interest 740,117.97 329,208.94 316,846.24 Servicing Fees 31,605.71 12,840.96 13,572.02 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee 632.12 256.83 271.43 FRY Amount 9,509.18 1,714.43 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 2,608.03 423.40 368.46 Pool Insurance Fee 0.00 0.00 0.00 Spread Fee 1 0.00 0.00 0.00 Spread Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest 695,762.93 313,973.32 302,634.33 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 5.503461 6.112733 5.574604

~~Pursuant~~Group toLevel ~~the~~Collateral ~~requirements~~Statement ofGroup ~~the~~G1 ~~Securities~~30Y ~~Exchange~~Conf ~~Act~~AltA ofG5 ~~1934~~30Y Conf AltA G6 15Y Conf AltA Collateral Description Mixed Fixed Mixed Fixed Mixed Fixed Weighted Average Coupon Rate 6.011488 6.430678 4.997347 Weighted Average Net Rate 5.761488 6.180678 4.747347 Weighted Average Maturity 357 355 179 Beginning Loan Count 376 372 103 Loans Paid In Full 6 5 1 Ending Loan Count 370 367 102 Beginning Scheduled Balance 201,606,100.41 ~~the~~71,177,280.96 ~~registrant~~50,345,281.75 ~~duly~~Ending ~~caused~~scheduled ~~this~~Balance ~~report~~197,787,471.55 to70,036,505.02 be49,742,651.42 ~~signed~~Record onDate ~~its~~11/30/2004 ~~behalf~~11/30/2004 by11/30/2004 ~~the~~Principal ~~undersigned~~And ~~hereunto~~Interest ~~duly~~Constant ~~authorized~~1,210,028.45 381,436.85 407,659.41 Scheduled Principal 200,067.97 5.03 197,998.69 Unscheduled Principal 3,618,560.89 1,140,770.91 404,631.64 Scheduled Interest 1,009,960.48 381,431.82 209,660.72 Servicing Fees 42,001.26 14,828.58 10,488.61 Master Servicing Fees 0.00 0.00 0.00 Trustee Fee 840.04 296.54 209.76 FRY Amount 4,873.51 3,205.14 0.00 Special Hazard Fee 0.00 0.00 0.00 Other Fee 1,833.90 1,527.03 722.90 Pool Insurance Fee 0.00 0.00 0.00 Spread Fee 1 0.00 0.00 0.00 Spread Fee 2 0.00 0.00 0.00 Spread Fee 3 0.00 0.00 0.00 Net Interest 960,411.77 361,574.53 198,239.45 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 5.716564 6.095897 4.725117

~~CREDIT~~Group ~~SUISSE~~Level ~~FIRST~~Collateral ~~BOSTON~~Statement ~~MORTGAGE~~Group G7 30Y Conf AltA G8 30Y Conf AltA Total Collateral Description Mixed Fixed Mixed Fixed Mixed Fixed Weighted Average Coupon Rate 6.408689 6.216762 6.035712 Weighted Average Net Rate 6.158689 5.966762 5.785712 Weighted Average Maturity 354.00 359.00 359.00 Record Date 11/30/2004 11/30/2004 11/30/2004 Principal And Interest Constant 381,860.53 801,000.06 4,848,425.78 Beginning Loan Count 388 258 2,312 Loans Paid In Full 3 13 41 Ending Loan Count 385 245 2,271 Beginning Scheduled Balance 61,100,820.84 131,091,947.02 793,811,028.03 Ending Scheduled Balance 60,447,684.87 122,745,658.73 772,456,669.51 Scheduled Principal 55,547.05 121,860.51 855,746.58 Unscheduled Principal 597,588.92 8,224,427.78 20,498,611.94 Scheduled Interest 326,313.48 679,139.55 3,992,679.20 Servicing Fee 12,729.34 27,310.83 165,377.31 Master Servicing Fee 0.00 0.00 0.00 Trustee Fee 254.57 546.22 3,307.51 Fry Amount 2,126.10 15,249.36 36,677.72 Special Hazard Fee 0.00 0.00 0.00 Other Fee 1,956.21 4,394.72 13,834.65 Pool Insurance Fee 0.00 0.00 0.00 Spread 1 0.00 0.00 0.00 Spread 2 0.00 0.00 0.00 Spread 3 0.00 0.00 0.00 Net Interest 309,247.26 631,638.42 3,773,482.01 Realized Loss Amount 0.00 0.00 0.00 Cumulative Realized Loss 0.00 0.00 0.00 Percentage of Cumulative Losses 0.0000 0.0000 0.0000 Prepayment Penalties 0.00 0.00 0.00 Special Servicing Fee 0.00 0.00 0.00 Pass-Through Rate 6.073514 5.781943 5.704353

~~SECURITIES~~Miscellaneous ~~CORP~~Reporting Group G1 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Subsquent Losses 0.00 Subsequent Loss Recoveries 0.00 Group G2 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Subsquent Losses 0.00 Subsequent Loss Recoveries 0.00 Group G3 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Subsquent Losses 0.00 Subsequent Loss Recoveries 0.00

~~By:~~Miscellaneous ~~/s/~~Reporting ~~Kevin~~Group ~~Steele~~G1 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Subsquent Losses 0.00 Subsequent Loss Recoveries 0.00 Group G5 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Subsquent Losses 0.00 Subsequent Loss Recoveries 0.00 Group G6 15Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Subsquent Losses 0.00 Subsequent Loss Recoveries 0.00

~~Name:~~Miscellaneous ~~Kevin~~Reporting ~~Steele~~ Group G7 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Subsquent Losses 0.00 Subsequent Loss Recoveries 0.00 Group G8 30Y Conf AltA Insurance Proceeds 0.00 Net Liquidation Proceeds 0.00 Repurchase Principal 0.00 Substitution Amount 0.00 Substitution Adjustment Amount 0.00 Subsquent Losses 0.00 Subsequent Loss Recoveries 0.00

Group

Title: Vice President

Dated: December 22, 2004

Exhibit Index

Exhibit

Page

99.1

Pooling and Servicing Agreement dated as of November 1, 2004,

by and among the Company, the Sellers, the Servicers, the

Special Servicer, the Master Servicer, the Trust Administrator

and the Trustee.

Filing Compare · CSFB Mortgage-Backed Pass-Through Certificates, Series 2004-8