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): ~~November~~December 2526, 2003 AMERIQUEST MORTGAGE SECURITIES INC. (as depositor, Ameriquest Mortgage Company, Master Servicer, and Deutsche Bank National Trust Company, as Trustee). ASSET BACKED PASS THROUGH CERTIFICATES SERIES 2003-4 (Exact name of Registrant as specified in its Charter) DELAWARE (State or Other Jurisdiction of Incorporation) 333-103335-02 33-0885129 (Commission File Number) (I.R.S. Employer Identification No.) 1100 TOWN & COUNTRY ROAD, SUITE 1100 ORANGE, CALIFORNIA 92868 (Address of principal executive offices) (Zip Code) Registrant's Telephone Number, Including Area Code: (714) 541-9960 Item 5. Other Events Attached hereto is a copy of the Monthly Remittance Statements to the Certificateholders which was derived from the monthly information submitted by the Master Servicer of the Trust to the Trustee. Item 7. Financial Statement and Exhibits Exhibits: (as noted in Item 5 above) Monthly Remittance Statement to the Certificateholders dated as of ~~November~~December 2526, 2003. SIGNATURE 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. Deutsche Bank National Trust Company, not in its individual capacity, but solely as a duly authorized agent of the Registrant pursuant to the Pooling and Servicing Agreement, dated as of April 1,2003. Date: ~~Nov~~Jan 2608, ~~2003~~2004 By: /s/ Katherine M. Wannenmacher Katherine M. Wannenmacher Vice President EXHIBIT INDEX DOCUMENT Monthly Remittance Statement to the Certificateholders dated as of ~~November~~December 2526, 2003.

	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	November 25, 2003 Distribution
	December 26, 2003 Distribution
	Contents
			TABLE OF CONTENTS
								Page
			1.	Contents				1
			2.	Certificate Payment Report				2
			3.	Collection Account Report				4
			4.	Credit Enhancement Report				7
			5.	Collateral Report				8
			6.	Delinquency Report				11
			7.	REO Report				12
			8.	Foreclosure Report				13
			9.	Prepayment Report				14
			10.	Prepayment Detail Report				17
			11.	Realized Loss Report				19
			12.	Realized Loss Detail Report				22
			13.	Triggers, Adj. Rate Cert. and Miscellaneous Report				23
				Total Number of Pages				23
			CONTACTS
				Administrator: Valerie Delgado
				Direct Phone Number: (714)247-6273
				Address: Deutsche Bank
				1761 E. St. Andrew Place, Santa Ana, CA 92705
				Web Site: https://www.corporatetrust.db.com/invr
				Factor Information: (800) 735-7777
				Main Phone Number: (714) 247-6000
ISSUANCE INFORMATION
	Seller:		Ameriquest Mtg Sec Inc					Cut-Off Date: April 1, 2003
	Certificate Insurer(s):							Closing Date: April 4, 2003
								First Payment Date: May 25, 2003
	Servicer(s):		Ameriquest Mortgage Corp Master Servicer
								Distribution Date: November 25, 2003
								Distribution Date: December 26, 2003
	Underwriter(s):		Blaylock & Partners, L.P. Underwriter					Record Date: ~~November~~December 24, 2003
								October 31, 2003
								November 28, 2003
						Page 1 of 23					© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	REMIC II
	Certificate Payment Report for November 25, 2003 Distribution
	Certificate Payment Report for December 26, 2003 Distribution
	Distribution in Dollars - Current Period
					Prior						Current
	Class	Original			Principal			Total	Realized	Deferred	Principal
Class	Type	Face Value			Balance	Interest	Principal	Distribution	Losses	Interest	Balance
					(1)	(2)	(3)	(4)=(2)+(3)	(5)	(6)	(7)=(1)-(3)-(5)+(6)
A-1		330,090,000.00			~~293~~281,~~087~~457,~~286~~514.4623	~~361~~370,~~230~~517.0832	1112,~~629~~980,~~772~~982.2334	1113,~~991~~351,~~002~~499.3166	-	-	~~281~~268,~~457~~476,~~514~~531.2389
M-1		27,000,000.00			27,000,000.00	4144,~~760~~610.0094	-	4144,~~760~~610.0094	-	-	27,000,000.00
M-2		15,000,000.00			15,000,000.00	3638,~~491~~992.6719	-	3638,~~491~~992.6719	-	-	15,000,000.00
M-3		9,000,000.00			9,000,000.00	2829,~~057~~982.5081	-	2829,~~057~~982.5081	-	-	9,000,000.00
M-4		4,000,000.00			4,000,000.00	1516,~~692~~770.2214	-	1516,~~692~~770.2214	-	-	4,000,000.00
M-5		5,000,000.00			5,000,000.00	1920,~~615~~962.2867	-	1920,~~615~~962.2867	-	-	5,000,000.00
CE		9,826,613.04			9,995,713.00	1,~~857~~735,~~749~~065.3395	-	1,~~857~~735,~~749~~065.3395	-	-	9,995,713.00
P		100.00			100.00	~~276~~345,~~469~~146.5501	-	~~276~~345,~~469~~146.5501	-	-	100.00
R		-			-	-	-	-	-	-	-
R-X		-			-	-	-	-	-	-	-
Total		399,916,713.04			~~363~~351,~~083~~453,~~099~~327.4623	2,~~637~~602,~~065~~048.6303	1112,~~629~~980,~~772~~982.2334	1415,~~266~~583,~~837~~030.8637	-	-	~~351~~338,~~453~~472,~~327~~344.2389
	Interest Accrual Detail				Current Period Factor Information per $1,000 of Original Face
						Orig. Principal	Prior				Current
	Period	Period				(with Notional)	Principal			Total	Principal
Class	Starting	Ending		Method	Cusip	Balance	Balance	Interest	Principal	Distribution	Balance
							(1)	(2)	(3)	(4)=(2)+(3)	(5)
A-1	1011/2725/03	1112/2425/03		A-30/360	03072SFM2	330,090,000.00	~~887~~852.~~901137~~669012	1.~~094338~~122474	3539.~~232125~~325585	3640.~~326463~~448059	~~852~~813.~~669012~~343427
M-1	1011/2725/03	1112/2425/03		A-Act/360	03072SFN0	27,000,000.00	1,000.000000	1.~~546667~~652257	-	1.~~546667~~652257	1,000.000000
M-2	1011/2725/03	1112/2425/03		A-Act/360	03072SFP5	15,000,000.00	1,000.000000	2.~~432778~~599479	-	2.~~432778~~599479	1,000.000000
M-3	1011/2725/03	1112/2425/03		A-Act/360	03072SFQ3	9,000,000.00	1,000.000000	3.~~117500~~331423	-	3.~~117500~~331423	1,000.000000
M-4	1011/2725/03	1112/2425/03		A-Act/360	03072SFR1	4,000,000.00	1,000.000000	34.~~923055~~192535	-	34.~~923055~~192535	1,000.000000
M-5	1011/2725/03	1112/2425/03		A-Act/360	03072SFS9	5,000,000.00	1,000.000000	34.~~923056~~192534	-	34.~~923056~~192534	1,000.000000
CE				A-30/360		9,826,613.04	1,017.208367	~~189~~176.~~052863~~568055	-	~~189~~176.~~052863~~568055	1,017.208367
P				A-30/360		100.00	1,000.000000	23,~~764~~451,~~695~~460.~~500000~~100000	-	23,~~764~~451,~~695~~460.~~500000~~100000	1,000.000000
R				A-Act/360		-	-	-	-	-	-
R-X				A-Act/360		-	-	-	-	-	-
							Page 2 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	REMIC II
	Certificate Payment Report for November 25, 2003 Distribution
	Certificate Payment Report for December 26, 2003 Distribution
	Distribution in Dollars - to Date
											Current
	Original				Unscheduled	Scheduled	Total	Total	Realized	Deferred	Principal
Class	Face Value		Interest		Principal	Principal	Principal	Distribution	Losses	Interest	Balance
	(1)		(2)		(3)	(4)	(5)=(3)+(4)	(6)=(2)+(5)	(7)	(8)	(9)=(1)-(5)-(7)+(8)
A-1	330,090,000.00		3,~~266~~636,~~480~~998.7911		4659,~~491~~211,~~474~~618.9203	2,~~141~~401,~~010~~850.8508	4861,~~632~~613,~~485~~468.7711	5165,~~898~~250,~~966~~466.5622	-	-	~~281~~268,~~457~~476,~~514~~531.2389
M-1	27,000,000.00		~~347~~391,~~295~~905.0094		-	-	-	~~347~~391,~~295~~905.0094	-	-	27,000,000.00
M-2	15,000,000.00		~~300~~339,~~650~~642.0120		-	-	-	~~300~~339,~~650~~642.0120	-	-	15,000,000.00
M-3	9,000,000.00		~~230~~260,~~327~~310.5031		-	-	-	~~230~~260,~~327~~310.5031	-	-	9,000,000.00
M-4	4,000,000.00		~~128~~145,~~478~~249.9004		-	-	-	~~128~~145,~~478~~249.9004	-	-	4,000,000.00
M-5	5,000,000.00		~~160~~181,~~598~~561.6128		-	-	-	~~160~~181,~~598~~561.6128	-	-	5,000,000.00
CE	9,826,613.04		1314,~~016~~751,~~774~~840.5348		-	-	-	1314,~~016~~751,~~774~~840.5348	-	169,099.96	9,995,713.00
P	100.00		1,~~086~~431,~~098~~244.5354		-	-	-	1,~~086~~431,~~098~~244.5354	-	-	100.00
R	-		-		-	-	-	-	-	-	-
R-X	-		-		-	-	-	-	-	-	-
Total	399,916,713.04		1821,~~536~~138,~~703~~751.8790		4659,~~491~~211,~~474~~618.9203	2,~~141~~401,~~010~~850.8508	4861,~~632~~613,~~485~~468.7711	6782,~~169~~752,~~189~~220.6401	-	169,099.96	~~351~~338,~~453~~472,~~327~~344.2389
	Interest Detail
	Pass-	Prior Principal				Non-	Prior	Unscheduled		Paid or	Current
	Through	(with Notional)			Accrued	Supported	Unpaid	Interest	Optimal	Deferred	Unpaid
Class	Rate	Balance			Interest	Interest SF	Interest	Adjustments	Interest	Interest	Interest
					(1)	(2)	(3)	(4)	(5)=(1)-(2)+(3)+(4)	(6)	(7)=(5)-(6)
A-1	1.~~53000~~52875%	~~293~~281,~~087~~457,~~286~~514.4623			~~361~~370,~~230~~517.0832	-	-	-	~~361~~370,~~230~~517.0832	~~361~~370,~~230~~517.0832	-
M-1	1.~~92000~~91875%	27,000,000.00			4144,~~760~~610.0094	-	-	-	4144,~~760~~610.0094	4144,~~760~~610.0094	-
M-2	3.~~02000~~01875%	15,000,000.00			3638,~~491~~992.6719	-	-	-	3638,~~491~~992.6719	3638,~~491~~992.6719	-
M-3	3.~~87000~~86875%	9,000,000.00			2829,~~057~~982.5081	-	-	-	2829,~~057~~982.5081	2829,~~057~~982.5081	-
M-4	4.~~87000~~86875%	4,000,000.00			1516,~~692~~770.2214	-	-	-	1516,~~692~~770.2214	1516,~~692~~770.2214	-
M-5	4.~~87000~~86875%	5,000,000.00			1920,~~615~~962.2867	-	-	-	1920,~~615~~962.2867	1920,~~615~~962.2867	-
CE	6.~~19730~~06793%	9,995,713.00			1,~~857~~735,~~749~~065.3395	-	-	-	1,~~857~~735,~~749~~065.3395	1,~~857~~735,~~749~~065.3395	-
P		100.00			~~276~~345,~~469~~146.5501	-	-	-	~~276~~345,~~469~~146.5501	~~276~~345,~~469~~146.5501	-
R		-			-	-	-	-	-	-	-
R-X		-			-	-	-	-	-	-	-
Total		~~363~~351,~~083~~453,~~099~~327.4623			2,~~637~~602,~~065~~048.6303	-	-	-	2,~~637~~602,~~065~~048.6303	2,~~637~~602,~~065~~048.6303	-
							Page 3 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Collection Account Report for November 25, 2003 Distribution
	Collection Account Report for December 26, 2003 Distribution
	Collection Account Report
SUMMARY								TOTAL
	Principal Collections							1112,~~623~~953,~~608~~686.4553
	Principal Other Accounts							0.00
	TOTAL NET PRINCIPAL							1112,~~623~~953,~~608~~686.4553
	Interest Collections							2,~~402~~325,~~694~~181.6332
	Interest Withdrawals							0.00
	Interest Other Accounts							~~276~~345,~~469~~146.5501
	Interest Fees							(1311,~~534~~383.7749)
	TOTAL NET INTEREST							2,~~665~~658,~~629~~943.4184
	TOTAL AVAILABLE FUNDS FOR DISTRIBUTION							1415,~~289~~612,~~237~~630.8637
PRINCIPAL - COLLECTIONS								TOTAL
	Scheduled Principal Received							~~268~~260,~~225~~839.3023
	Prepayments In Full							1112,~~185~~508,~~597~~568.9484
	Curtailments							229,~~025~~821.5217
	Liquidations							~~153~~201,~~923~~753.4710
	Insurance Principal							0.00
	Repurchased Principal Amounts							0.00
	Other Principal							0.00
	Total Realized Loss Of Principal							(627,~~163~~295.7881)
	Delinquent Principal							(239,~~654~~461.5345)
	Advanced Principal							239,~~654~~461.5345
	TOTAL PRINCIPAL COLLECTED							1112,~~623~~953,~~608~~686.4553
				Page 4 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Collection Account Report for November 25, 2003 Distribution
	Collection Account Report for December 26, 2003 Distribution
	Collection Account Report
PRINCIPAL - WITHDRAWALS								TOTAL
SPACE INTENTIONALLY LEFT BLANK
PRINCIPAL - OTHER ACCOUNTS								TOTAL
	TOTAL OTHER ACCOUNTS PRINCIPAL							0.00
INTEREST - COLLECTIONS								TOTAL
	Scheduled Interest							2,~~480~~401,~~744~~807.2081
	Liquidation Interest							1,~~153~~757.1406
	Repurchased Interest							0.00
	Insurance Interest							0.00
	Other Interest							0.00
	Relief Act Interest Shortfalls							0.00
	Prepayment Interest Shortfalls							(1011,~~775~~222.9562)
	Compensating Interest							1011,~~775~~222.9562
	Delinquent Interest							(2,~~162~~138,~~272~~099.3159)
	Interest Advanced							2,~~083~~059,~~069~~716.6004
	TOTAL INTEREST COLLECTED							2,~~402~~325,~~694~~181.6332
				Page 5 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Collection Account Report for November 25, 2003 Distribution
	Collection Account Report for December 26, 2003 Distribution
	Collection Account Report
INTEREST - WITHDRAWALS								TOTAL
	Trust Fund Expenses							0.00
	Nonrecoverable Advances							0.00
	Reimbursements to Master Servicer							0.00
	TOTAL INTEREST WITHDRAWALS							0.00
INTEREST - OTHER ACCOUNTS								TOTAL
	Prepayment Charges							~~276~~345,~~469~~146.5501
	Capitalized Interest Requirement							0.00
	TOTAL INTEREST OTHER ACCOUNTS							~~276~~345,~~469~~146.5501
INTEREST - FEES								TOTAL
	Current Servicing Fees							119,~~568~~479.0778
	Trustee Fee							1,~~966~~903.7071
	TOTAL INTEREST OTHER FEES							1311,~~534~~383.7749
				Page 6 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Credit Enhancement Report for November 25, 2003 Distribution
	Credit Enhancement Report for December 26, 2003 Distribution
	Credit Enhancement Report
ACCOUNTS								TOTAL
	Net WAC Rate Carryover Reserve Account							1,002.48
INSURANCE								TOTAL
SPACE INTENTIONALLY LEFT BLANK
STRUCTURAL FEATURES								TOTAL
	Overcollateralized Amount							9,995,713.00
	Overcollateralization Release Amount							0.00
	Overcollateralization Deficiency Amount							627,~~163~~295.7881
	Overcollateralization Target Amount							9,995,713.00
	Excess Overcollateralization Amount							0.00
	Overcollateralization Increase Amount							627,~~163~~295.7881
				Page 7 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Collateral Report for November 25, 2003 Distribution
	Collateral Report for December 26, 2003 Distribution
	Collateral Report
COLLATERAL								TOTAL
	Loan Count:
	Original							2844
	Prior							2,~~628~~558
	Prefunding							-
	Scheduled Paid Offs							-
	Full Voluntary Prepayments							(6974)
	Repurchases							-
	Liquidations							(12)
	Current							2,~~558~~482
	Principal Balance:
	Original							399,916,713.04
	Prior							~~363~~351,~~083~~453,~~099~~327.4623
	Prefunding							-
	Scheduled Principal							(~~268~~260,~~225~~839.3023)
	Partial and Full Voluntary Prepayments							(1112,~~207~~518,~~623~~390.4601)
	Repurchases							-
	Liquidations							(~~153~~201,~~923~~753.4710)
	Current							~~351~~338,~~453~~472,~~327~~344.2389
PREFUNDING								TOTAL
SPACE INTENTIONALLY LEFT BLANK
Current Prin Balance by Groups (in millions of dollars)					Total Current Principal Balance (in millions of dollars)
				Page 8 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Collateral Report for November 25, 2003 Distribution
	Collateral Report for December 26, 2003 Distribution
	Collateral Report
CHARACTERISTICS								TOTAL
	Weighted Average Coupon Original							8.181576%
	Weighted Average Coupon Prior							8.~~165198~~165725%
	Weighted Average Coupon Current							8.~~165725~~156184%
	Weighted Average Months to Maturity Original							353
	Weighted Average Months to Maturity Prior							~~348~~347
	Weighted Average Months to Maturity Current							~~347~~346
	Weighted Avg Remaining Amortization Term Original							352
	Weighted Avg Remaining Amortization Term Prior							~~348~~346
	Weighted Avg Remaining Amortization Term Current							~~346~~345
	Weighted Average Seasoning Original							2.46
	Weighted Average Seasoning Prior							78.43
	Weighted Average Seasoning Current							89.43
Note: Original information refers to deal issue.
WAC by Groups					Total WAC
WARAT by Groups					Total WARAT
Note: Dates correspond to distribution dates.
				Page 9 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Collateral Report for November 25, 2003 Distribution
	Collateral Report for December 26, 2003 Distribution
	Collateral Report
ARM CHARACTERISTICS								TOTAL
	Weighted Average Margin Original							5.310%
	Weighted Average Margin Prior							5.~~316~~323%
	Weighted Average Margin Current							5.~~323~~299%
	Weighted Average Max Rate Original							12.121%
	Weighted Average Max Rate Prior							12.~~118~~132%
	Weighted Average Max Rate Current							12.~~132~~070%
	Weighted Average Min Rate Original							7.022%
	Weighted Average Min Rate Prior							7.~~013~~022%
	Weighted Average Min Rate Current							76.~~022~~982%
	Weighted Average Cap Up Original							0.850%
	Weighted Average Cap Up Prior							0.~~851~~852%
	Weighted Average Cap Up Current							0.~~852~~848%
	Weighted Average Cap Down Original							0.850%
	Weighted Average Cap Down Prior							0.~~851~~852%
	Weighted Average Cap Down Current							0.~~852~~848%
Note: Original information refers to deal issue.
SERVICING FEES / ADVANCES								TOTAL
	Current Servicing Fees							119,~~568~~479.0778
	Delinquent Servicing Fees							7978,~~202~~383.7156
	TOTAL SERVICING FEES							9087,~~770~~863.7834
	Compensating Interest							(1011,~~775~~222.9562)
	Delinquent Servicing Fees							(7978,~~202~~383.7156)
	COLLECTED SERVICING FEES							~~792~~(1,742.1284)
	Aggregate Advances with respect to this Distribution							2,~~322~~299,~~724~~177.1349
	Current Nonrecoverable Advances							0.00
	Cumulative Nonrecoverable Advances							0.00
ADDITIONAL COLLATERAL INFORMATION								TOTAL
	Net Prepayment Interest Shortfall							0.00
				Page 10 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Delinquency Report for November 25, 2003 Distribution
	Delinquency Report for December 26, 2003 Distribution
	Delinquency Report - Total
				<1 PAYMENT	1 PAYMENT	2 PAYMENTS	3+ PAYMENTS	TOTAL
DELINQUENT		Balance			4,~~935~~370,~~957~~422.1830	2,~~545~~198,~~356~~031.0737	-	76,~~481~~568,~~313~~453.2567
		% Balance			1.4029%	0.7265%	0.00%	21.1394%
		# Loans			3632	2216	-	5848
		% # Loans			1.4129%	0.8664%	0.00%	21.2793%
FORECLOSURE		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%
BANKRUPTCY		Balance		~~354~~619,~~216~~738.1297	-69,474.73	-	~~314,580.50~~-	~~668~~689,~~796~~213.6270
		% Balance		0.1018%	0.0002%	0.00%	0.0900%	0.1920%
		# Loans		23	-1	-	3-	54
		% # Loans		0.0812%	0.0004%	0.00%	0.1200%	0.2016%
REO		Balance		-	-	-	-	-
		% Balance		0.00%	0.00%	0.00%	0.00%	0.00%
		# Loans		-	-	-	-	-
		% # Loans		0.00%	0.00%	0.00%	0.00%	0.00%
TOTAL		Balance		~~354~~619,~~216~~738.1297	4,~~935~~439,~~957~~897.1803	2,~~545~~198,~~356~~031.0737	~~314,580.50~~-	87,~~150~~257,~~109~~667.8737
		% Balance		0.1018%	1.4031%	0.7265%	0.0900%	2.3214%
		# Loans		23	3633	2216	3-	6352
		% # Loans		0.0812%	1.4133%	0.8664%	0.1200%	2.4610%
Note: <1 Payment = 0-29days, 1 Payment = 30-59days, 2 Payments = 60-89days, 3+ Payments = 90+
								6 Months Moving Average
1 or 2 Payments Delinquent					3 or More Payments Delinquent
Total Foreclosure					Total Bankruptcy and REO
Note: Dates correspond to distribution dates.
				Page 11 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	REO Report for November 25, 2003 Distribution
	REO Report for December 26, 2003 Distribution
	REO Report - Mortgage Loans that Become REO During Current Distribution
SUMMARY				LOAN GROUP
Total Loan Count = 0				Loan Group 1 = Group 1 Group; REO Book Value = 000.00
Total Original Principal Balance = 000.00
Total Current Balance = 000.00
REO Book Value = 000.00
REO Book Value reported corresponds to total REO loans, including loans that become REO during current distribution.
Loan Number		Original	Stated		Current	State &
&		Principal	Principal	Paid to	Note	LTV at	Original	Origination
Loan Group		Balance	Balance	Date	Rate	Origination	Term	Date
SPACE INTENTIONALLY LEFT BLANK
				Page 12 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Foreclosure Report for November 25, 2003 Distribution
	Foreclosure Report for December 26, 2003 Distribution
	Foreclosure Report - Mortgage Loans that Become Foreclosure During Current Distribution
SUMMARY				LOAN GROUP
Total Loan Count = 0				Loan Group 1 = Group 1 Group
Total Original Principal Balance = 000.00
Total Current Balance = 000.00
Loan Number		Original	Stated		Current	State &
&		Principal	Principal	Paid to	Note	LTV at	Original	Origination
Loan Group		Balance	Balance	Date	Rate	Origination	Term	Date
SPACE INTENTIONALLY LEFT BLANK
				Page 13 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Prepayment Report for November 25, 2003 Distribution
	Prepayment Report for December 26, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
VOLUNTARY PREPAYMENTS								TOTAL
	Current
	Number of Paid in Full Loans							6974
	Number of Repurchased Loans							-
	Total Number of Loans Prepaid in Full							6974
	Paid in Full Balance							1112,~~185~~508,~~597~~568.9484
	Repurchased Loans Balance							-
	Curtailments Amount							229,~~025~~821.5217
	Total Prepayment Amount							1112,~~207~~518,~~623~~390.4601
	Cumulative
	Number of Paid in Full Loans							~~273~~347
	Number of Repurchased Loans							12
	Total Number of Loans Prepaid in Full							~~285~~359
	Paid in Full Balance							4457,~~778~~287,~~746~~315.2307
	Repurchased Loans Balance							1,200,999.04
	Curtailments Amount							~~357~~367,~~806~~627.1835
	Total Prepayment Amount							4658,~~337~~855,~~551~~941.4546
SPACE INTENTIONALLY LEFT BLANK
Total Prepayments by Groups (in thousands of dollars)					Total Prepayments (in thousands of dollars)
				Page 14 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Prepayment Report for November 25, 2003 Distribution
	Prepayment Report for December 26, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
VOLUNTARY PREPAYMENT RATES								TOTAL
	SMM							3.0956%
	3 Months Avg SMM							23.4303%
	12 Months Avg SMM
	Avg SMM Since Cut-off							1.7598%
	CPR							3135.3831%
	3 Months Avg CPR							2530.5283%
	12 Months Avg CPR
	Avg CPR Since Cut-off							1921.1033%
	PSA							~~1861~~1872.0717%
	3 Months Avg PSA Approximation							~~1717~~1828.3095%
	12 Months Avg PSA Approximation
	Avg PSA Since Cut-off Approximation							~~1754~~1795.8226%
CPR by Groups					Total CPR
PSA by Groups					Total PSA
				Page 15 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Prepayment Report for November 25, 2003 Distribution
	Prepayment Report for December 26, 2003 Distribution
	Prepayment Report - Voluntary Prepayments
CPR Avg since Cut-Off by Groups					Total CPR Avg since Cut-Off
PSA Avg since Cut-Off by Groups					Total PSA Avg since Cut-Off
PREPAYMENT CALCULATION METHODOLOGY
Single Monthly Mortality (SMM): (Voluntary partial and full prepayments + Repurchases)/(Beg Principal Balance - Sched Principal)
Conditional Prepayment Rate (CPR): 1-((1-SMM)^12)
PSA Standard Prepayment Model: CPR/(0.02*min(30,WAS))
Average SMM over period between nth month and mth month (AvgSMMn,m): [(1-SMMn) * (1-SMMn+1) .......(1-SMMm)]^(1/months in period n,m)
Average CPR over period between the nth month and mth month (AvgCPRn,m): 1-((1-AvgSMMn,m)^12)
Average PSA Approximation over period between the nth month and mth month: AvgCPRn,m/(0.02*Avg WASn,m))
Average WASn,m: (min(30,WASn)+min(30,WASn+1)+.......+min(30,WASm)/(number of months in the period n,m)
Weighted Average Seasoning (WAS)
Note: Prepayment rates are calculated since deal issue date and include partial and full voluntary prepayments and repurchases.
Dates correspond to distribution dates.
				Page 16 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Prepayment Detail Report for November 25, 2003 Distribution
	Prepayment Detail Report for December 26, 2003 Distribution
	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution
SUMMARY						LOAN GROUP
Total Loan Count = 69						Loan Group 1 = Group 1 Group
Total Loan Count = 74						Loan Group 1 = Group 1 Group
Total Original Principal Balance = 11,242,000.00
Total Original Principal Balance = 12,587,216.00
Total Prepayment Amount = 11,185,597.94
Total Prepayment Amount = 12,508,568.84
Loan Number			Original			Current	State &	Type Prepayment
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	&	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Original Term	Date
39200027 0			111,000.00	110,436.59	Nov-04-03	9.999%	NH - 83.46%	Paid Off - 360	Oct-29-02
39081278 0			274,000.00	271,255.00	Dec-08-03	7.500%	CO - 81.79%	Paid Off - 360	Sep-30-02
40330185 0			128,700.00	128,083.24	Oct-31-03	8.000%	CA - 90.00%	Paid Off - 360	Feb-14-03
40438830 0			116,000.00	115,346.82	Nov-12-03	9.500%	MN - 74.84%	Paid Off - 360	Nov-25-02
40383838 0			284,000.00	282,862.85	Nov-03-03	10.999%	NY - 68.43%	Paid Off - 360	Nov-19-02
40472540 0			77,250.00	76,917.11	Dec-08-03	10.775%	TX - 75.00%	Paid Off - 360	Nov-21-02
41597030 0			89,600.00	89,106.68	Nov-07-03	7.990%	MI - 70.00%	Paid Off - 360	Feb-05-03
40821472 0			126,000.00	125,212.27	Nov-26-03	8.990%	MN - 87.50%	Paid Off - 360	Nov-29-02
41789041 0			127,500.00	126,468.68	Oct-29-03	6.250%	CA - 85.00%	Paid Off - 360	Jan-17-03
40930364 0			120,000.00	119,026.62	Dec-01-03	6.900%	HI - 43.96%	Paid Off - 360	Feb-07-03
41922022 0			68,000.00	67,680.55	Nov-04-03	8.100%	NY - 85.00%	Paid Off - 360	Feb-13-03
40969446 0			221,600.00	219,670.26	Nov-20-03	7.500%	NJ - 80.00%	Paid Off - 360	Jan-03-03
41959768 0			106,000.00	105,106.29	Nov-05-03	5.790%	CA - 88.33%	Paid Off - 360	Jan-28-03
41401951 0			225,000.00	223,397.28	Nov-21-03	7.300%	NY - 88.24%	Paid Off - 360	Jan-27-03
41988924 0			237,000.00	235,317.54	Oct-17-03	6.700%	CA - 87.78%	Paid Off - 360	Jan-09-03
41455445 0			263,500.00	261,820.01	Dec-01-03	7.250%	NY - 85.00%	Paid Off - 360	Feb-14-03
42029629 0			200,000.00	199,106.86	Oct-27-03	8.350%	NY - 59.52%	Paid Off - 360	Feb-11-03
41576554 0			51,000.00	50,855.61	Nov-26-03	11.750%	MI - 37.78%	Paid Off - 360	Jan-13-03
42060624 0			153,850.00	152,933.46	Oct-30-03	7.600%	IL - 85.00%	Paid Off - 360	Jan-27-03
41805656 0			280,000.00	278,429.38	Dec-03-03	8.500%	CA - 80.00%	Paid Off - 360	Jan-31-03
42067520 0			212,500.00	211,607.13	Oct-22-03	8.650%	CA - 85.00%	Paid Off - 360	Feb-12-03
41856584 0			280,000.00	278,248.63	Nov-28-03	8.500%	FL - 74.67%	Paid Off - 360	Dec-31-02
42156992 0			78,750.00	78,374.31	Nov-04-03	8.700%	FL - 90.00%	Paid Off - 360	Jan-30-03
41868332 0			248,200.00	246,491.14	Nov-25-03	7.750%	IL - 85.00%	Paid Off - 360	Jan-30-03
42158618 0			78,750.00	78,374.31	Nov-04-03	8.700%	FL - 90.00%	Paid Off - 360	Jan-30-03
41902909 0			168,000.00	167,165.28	Nov-19-03	8.500%	CA - 80.00%	Paid Off - 360	Feb-12-03
42257642 0			223,250.00	222,010.92	Oct-23-03	7.950%	CA - 95.00%	Paid Off - 360	Jan-16-03
41916883 0			210,900.00	209,129.57	Nov-21-03	6.450%	CA - 95.00%	Paid Off - 360	Jan-28-03
42399527 0			86,000.00	85,339.78	Oct-23-03	7.990%	MA - 19.55%	Paid Off - 360	Feb-07-03
42047118 0			126,000.00	125,474.06	Dec-02-03	9.350%	WI - 90.00%	Paid Off - 360	Feb-14-03
42411561 0			198,000.00	197,138.47	Oct-30-03	9.350%	MA - 79.84%	Paid Off - 360	Jan-22-03
42122283 0			50,000.00	49,704.96	Nov-18-03	8.250%	ID - 30.30%	Paid Off - 360	Jan-14-03
42413260 0			161,500.00	160,867.06	Oct-21-03	8.990%	NY - 85.00%	Paid Off - 360	Feb-20-03
42132365 0			144,000.00	143,035.03	Nov-14-03	7.150%	AZ - 90.00%	Paid Off - 360	Feb-10-03
42458067 0			168,000.00	167,643.18	Oct-22-03	12.500%	NJ - 49.41%	Paid Off - 360	Jan-22-03
42216564 0			67,500.00	67,216.09	Dec-04-03	10.000%	OR - 75.00%	Paid Off - 360	Jan-31-03
42522920 0			121,500.00	120,640.49	Oct-14-03	6.000%	MI - 90.00%	Paid Off - 360	Feb-18-03
42248039 0			209,100.00	207,310.95	Nov-24-03	6.350%	FL - 85.00%	Paid Off - 360	Jan-15-03
42550251 0			97,325.00	96,932.47	Oct-31-03	8.850%	NJ - 85.00%	Paid Off - 360	Feb-13-03
42384693 0			322,699.00	321,248.29	Dec-01-03	8.990%	CA - 82.11%	Paid Off - 360	Feb-13-03
42577650 0			127,500.00	126,855.89	Nov-04-03	8.600%	FL - 85.00%	Paid Off - 360	Feb-12-03
42450627 0			210,000.00	208,877.30	Nov-25-03	8.500%	CA - 71.19%	Paid Off - 360	Feb-18-03
42600064 0			190,000.00	189,173.28	Oct-29-03	9.150%	NY - 78.51%	Paid Off - 360	Jan-24-03
42483354 0			179,000.00	178,108.14	Nov-12-03	8.500%	AL - 79.56%	Paid Off - 360	Feb-12-03
42641340 0			172,000.00	171,162.57	Oct-31-03	8.600%	MA - 80.00%	Paid Off - 360	Feb-03-03
42491498 0			85,000.00	84,590.16	Dec-03-03	9.250%	CA - 85.00%	Paid Off - 360	Jan-31-03
42712570 0			266,400.00	264,701.85	Oct-29-03	7.250%	CA - 90.00%	Paid Off - 360	Jan-28-03
42509794 0			242,250.00	240,417.03	Nov-28-03	6.990%	CA - 95.00%	Paid Off - 360	Jan-21-03
42724773 0			220,000.00	219,294.02	Oct-16-03	9.950%	NY - 67.69%	Paid Off - 360	Feb-18-03
42515734 0			200,000.00	198,986.48	Dec-03-03	8.999%	NH - 79.37%	Paid Off - 360	Feb-07-03
42732404 0			122,400.00	121,726.06	Nov-04-03	7.990%	CA - 84.44%	Paid Off - 360	Jan-31-03
42538330 0			126,900.00	126,049.98	Nov-14-03	7.000%	NV - 90.00%	Paid Off - 360	Feb-06-03
42734418 0			187,000.00	186,304.46	Nov-06-03	10.150%	NY - 64.48%	Paid Off - 360	Jan-31-03
42561910 0			150,000.00	148,986.19	Dec-04-03	6.950%	MI - 75.00%	Paid Off - 360	Feb-19-03
42744144 0			116,000.00	115,543.86	Nov-10-03	8.990%	CA - 80.00%	Paid Off - 360	Feb-12-03
42573964 0			98,000.00	97,460.34	Dec-01-03	7.999%	CA - 81.67%	Paid Off - 360	Feb-11-03
42811265 0			160,000.00	159,491.95	Oct-31-03	10.650%	WI - 72.73%	Paid Off - 360	Feb-12-03
42577973 0			104,550.00	103,780.80	Dec-10-03	7.500%	MD - 85.00%	Paid Off - 360	Feb-13-03
42841908 0			87,000.00	86,783.14	Oct-15-03	11.775%	MI - 73.11%	Paid Off - 360	Jan-29-03
42598482 0			170,000.00	169,027.86	Dec-09-03	7.800%	IL - 52.31%	Paid Off - 360	Feb-03-03
42856435 0			246,500.00	245,207.66	Nov-05-03	7.990%	CA - 85.00%	Paid Off - 360	Feb-12-03
42637876 0			128,250.00	127,493.41	Nov-17-03	8.250%	FL - 84.38%	Paid Off - 360	Feb-12-03
42886614 0			153,000.00	152,400.39	Oct-23-03	8.990%	ME - 90.00%	Paid Off - 360	Feb-12-03
42669010 0			276,000.00	274,223.34	Nov-26-03	7.200%	CA - 77.75%	Paid Off - 360	Feb-07-03
42887224 0			188,000.00	186,755.54	Nov-05-03	6.350%	CA - 80.00%	Paid Off - 360	Feb-13-03
42717777 0			60,000.00	59,719.53	Nov-11-03	8.800%	NY - 48.00%	Paid Off - 360	Feb-12-03
42905489 0			221,000.00	219,990.88	Oct-22-03	8.250%	NY - 85.00%	Paid Off - 360	Feb-03-03
42737528 0			186,000.00	184,728.34	Dec-01-03	7.509%	CA - 62.00%	Paid Off - 360	Jan-31-03
42934760 0			88,500.00	88,045.18	Nov-05-03	7.650%	IN - 87.62%	Paid Off - 360	Feb-06-03
42754614 0			290,400.00	288,804.25	Dec-03-03	8.000%	NY - 80.00%	Paid Off - 360	Feb-18-03
42943696 0			87,000.00	86,641.85	Oct-31-03	8.750%	FL - 75.00%	Paid Off - 360	Feb-12-03
42777508 0			80,750.00	80,292.75	Dec-09-03	7.850%	MI - 85.00%	Paid Off - 360	Feb-14-03
43013556 0			105,000.00	104,637.40	Nov-05-03	9.600%	FL - 75.00%	Paid Off - 360	Feb-13-03
42785808 0			50,000.00	49,778.44	Dec-08-03	9.650%	OH - 83.33%	Paid Off - 360	Jan-30-03
43036391 0			165,000.00	164,354.60	Nov-06-03	8.999%	CA - 75.00%	Paid Off - 360	Feb-12-03
42807792 0			208,000.00	206,674.13	Dec-01-03	7.250%	NJ - 80.00%	Paid Off - 360	Feb-12-03
43047695 0			128,500.00	127,756.89	Nov-05-03	7.050%	MN - 82.90%	Paid Off - 360	Feb-11-03
42817056 0			113,600.00	113,221.65	Nov-21-03	10.999%	NJ - 78.89%	Paid Off - 360	Feb-12-03
43051267 0			90,375.00	90,020.83	Oct-31-03	8.990%	MN - 75.00%	Paid Off - 360	Feb-13-03
42822569 0			124,000.00	123,443.54	Nov-19-03	8.999%	CA - 78.98%	Paid Off - 360	Feb-13-03
43063643 0			175,500.00	174,570.94	Oct-30-03	7.500%	CA - 90.00%	Paid Off - 360	Feb-20-03
42839472 0			162,000.00	160,587.34	Nov-20-03	6.250%	NJ - 62.31%	Paid Off - 360	Jan-31-03
43081819 0			245,000.00	243,690.19	Oct-16-03	7.450%	CA - 64.47%	Paid Off - 360	Feb-18-03
42853739 0			63,317.00	62,965.53	Nov-21-03	7.950%	CA - 95.00%	Paid Off - 360	Feb-11-03
43091297 0			123,500.00	122,972.51	Oct-20-03	9.250%	MN - 65.69%	Paid Off - 360	Feb-10-03
42873067 0			67,500.00	67,281.01	Nov-21-03	10.550%	MI - 75.00%	Paid Off - 360	Feb-12-03
43098011 0			232,000.00	230,995.02	Oct-16-03	8.500%	CA - 80.00%	Paid Off - 360	Feb-10-03
42887067 0			100,300.00	98,873.46	Nov-28-03	8.250%	MA - 85.00%	Paid Off - 360	Feb-18-03
					Page 17 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Prepayment Detail Report for November 25, 2003 Distribution
	Prepayment Detail Report for December 26, 2003 Distribution
	Prepayment Detail Report - Loans Prepaid in Full During Current Distribution
Loan Number			Original			Current	State &
&		Loan	Principal	Prepayment	Prepayment	Note	LTV at	Original	Origination
Loan Group		Status	Balance	Amount	Date	Rate	Origination	Term	Date
43111715 0			224,000.00	222,940.87	Oct-27-03	9.777%	CA - 80.00%	Paid Off - 360	Feb-20-03
42905786 0			62,000.00	61,584.14	Dec-08-03	6.990%	CA - 51.24%	Paid Off - 360	Feb-18-03
43150663 0			138,750.00	138,308.48	Oct-30-03	9.990%	CA - 75.00%	Paid Off - 360	Feb-18-03
42975219 0			202,500.00	200,978.63	Nov-14-03	6.400%	MN - 90.00%	Paid Off - 360	Feb-05-03
43160357 0			133,000.00	132,287.64	Oct-29-03	10.650%	MA - 57.83%	Paid Off - 360	Feb-18-03
42983429 0			204,000.00	202,303.80	Nov-24-03	6.500%	CA - 85.00%	Paid Off - 360	Jan-31-03
43171198 0			221,000.00	219,886.69	Oct-23-03	7.750%	IL - 85.00%	Paid Off - 360	Feb-14-03
42988071 0			125,800.00	125,220.91	Nov-12-03	8.875%	AZ - 85.00%	Paid Off - 360	Feb-11-03
43180371 0			220,000.00	218,715.33	Oct-22-03	7.000%	NY - 48.89%	Paid Off - 360	Feb-12-03
43011337 0			258,000.00	256,651.74	Nov-18-03	8.250%	CA - 66.50%	Paid Off - 360	Feb-13-03
43180900 0			206,000.00	205,116.65	Oct-20-03	8.550%	CA - 80.78%	Paid Off - 360	Feb-14-03
43013994 0			304,000.00	302,405.05	Dec-01-03	8.250%	MA - 77.95%	Paid Off - 360	Feb-13-03
43186238 0			123,000.00	122,554.81	Oct-27-03	9.375%	CO - 70.69%	Paid Off - 360	Feb-11-03
43023340 0			267,750.00	266,125.10	Nov-24-03	7.500%	MA - 85.00%	Paid Off - 360	Feb-04-03
43230085 0			333,000.00	330,939.02	Oct-22-03	6.700%	CA - 90.00%	Paid Off - 360	Feb-13-03
43082726 0			306,000.00	304,495.03	Dec-08-03	8.550%	NV - 90.00%	Paid Off - 360	Feb-05-03
43236355 0			110,000.00	109,456.82	Oct-31-03	7.850%	MA - 73.33%	Paid Off - 360	Feb-12-03
43106780 0			130,000.00	129,292.78	Dec-03-03	8.050%	MI - 79.03%	Paid Off - 360	Feb-11-03
43243880 0			220,000.00	218,642.38	Oct-15-03	6.800%	MA - 69.84%	Paid Off - 360	Feb-18-03
43171057 0			276,250.00	275,788.03	Nov-13-03	12.950%	NJ - 65.00%	Paid Off - 360	Mar-19-03
43271733 0			145,000.00	144,431.78	Nov-03-03	8.990%	CA - 51.79%	Paid Off - 360	Feb-24-03
43171271 0			85,000.00	84,555.79	Nov-28-03	8.250%	FL - 35.42%	Paid Off - 360	Feb-13-03
43287457 0			162,000.00	161,366.29	Nov-04-03	8.999%	NY - 60.00%	Paid Off - 360	Feb-13-03
43176734 0			256,500.00	254,880.92	Nov-24-03	7.300%	NY - 90.00%	Paid Off - 360	Feb-12-03
43290808 0			143,000.00	142,367.84	Oct-17-03	8.400%	ME - 58.37%	Paid Off - 360	Feb-14-03
43187921 0			290,000.00	288,747.83	Nov-18-03	9.200%	MA - 59.18%	Paid Off - 360	Feb-13-03
43304575 0			232,750.00	231,565.81	Oct-30-03	7.700%	CA - 95.00%	Paid Off - 360	Feb-14-03
43198589 0			274,500.00	272,534.54	Dec-10-03	6.750%	NY - 90.00%	Paid Off - 360	Feb-20-03
43329960 0			123,750.00	123,327.09	Oct-27-03	9.650%	NY - 75.00%	Paid Off - 360	Feb-19-03
43200328 0			244,000.00	242,562.48	Nov-24-03	7.650%	MA - 80.00%	Paid Off - 360	Feb-04-03
43338938 0			110,000.00	109,431.75	Oct-28-03	7.650%	MA - 50.00%	Paid Off - 360	Feb-19-03
43218809 0			133,500.00	131,753.77	Nov-12-03	8.500%	PA - 82.41%	Paid Off - 240	Feb-07-03
43387158 0			176,250.00	175,535.28	Nov-10-03	9.500%	CA - 75.00%	Paid Off - 360	Feb-12-03
43243294 0			175,500.00	172,362.52	Nov-28-03	7.250%	IL - 68.82%	Paid Off - 240	Feb-14-03
43443019 0			247,500.00	246,349.18	Nov-03-03	8.150%	NY - 90.00%	Paid Off - 360	Feb-18-03
43258581 0			143,000.00	141,767.74	Nov-28-03	8.990%	MA - 71.50%	Paid Off - 360	Feb-18-03
43457860 0			284,000.00	282,420.70	Oct-29-03	7.250%	CA - 88.75%	Paid Off - 360	Feb-20-03
43275817 0			210,000.00	208,787.08	Nov-12-03	7.750%	MA - 71.43%	Paid Off - 360	Feb-20-03
43473214 0			158,600.00	157,869.98	Oct-16-03	8.200%	FL - 65.00%	Paid Off - 360	Feb-11-03
43311463 0			150,000.00	149,270.26	Nov-25-03	8.650%	MN - 89.82%	Paid Off - 360	Feb-25-03
43586288 0			130,500.00	129,873.36	Nov-03-03	7.990%	RI - 90.00%	Paid Off - 360	Feb-19-03
43314921 0			123,300.00	121,997.08	Dec-05-03	7.250%	MO - 90.00%	Paid Off - 360	Feb-19-03
43588649 0			110,500.00	110,038.73	Oct-28-03	8.990%	MI - 85.00%	Paid Off - 360	Feb-18-03
43363977 0			131,000.00	130,542.32	Nov-25-03	10.200%	CT - 80.37%	Paid Off - 360	Feb-20-03
43881713 0			111,000.00	108,362.40	Oct-28-03	10.150%	MA - 60.00%	Paid Off - 360	Feb-27-03
43401033 0			190,000.00	188,891.64	Nov-19-03	7.700%	MN - 84.07%	Paid Off - 360	Feb-14-03
44197226 0			125,000.00	124,542.19	Nov-04-03	8.550%	ME - 83.33%	Paid Off - 360	Mar-18-03
43404995 0			111,000.00	110,475.85	Nov-26-03	8.750%	FL - 79.29%	Paid Off - 360	Feb-18-03
44233492 0			225,000.00	224,159.05	Oct-24-03	8.450%	MI - 84.91%	Paid Off - 360	Mar-05-03
43413491 0			261,000.00	259,633.21	Nov-17-03	8.400%	IL - 88.48%	Paid Off - 360	Feb-12-03
					Page 18 of 23				© COPYRIGHT 2003 Deutsche Bank
43555630 0			131,250.00	130,514.19	Dec-09-03	7.900%	SC - 75.00%	Paid Off - 360	Feb-27-03
43650498 0			69,300.00	69,079.96	Nov-26-03	10.650%	MO - 90.00%	Paid Off - 360	Feb-14-03
43738723 0			128,000.00	127,454.56	Nov-19-03	9.250%	FL - 76.19%	Paid Off - 360	Feb-20-03
43875590 0			172,500.00	172,143.17	Dec-02-03	11.990%	NY - 75.00%	Paid Off - 360	Mar-13-03
43952324 0			115,000.00	114,443.36	Nov-19-03	7.950%	NH - 69.70%	Paid Off - 360	Mar-05-03
					Page 18 of 23				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Realized Loss Report for November 25, 2003 Distribution
	Realized Loss Report for December 26, 2003 Distribution
	Realized Loss Report - Collateral
COLLATERAL REALIZED LOSSES								TOTAL
	Current
	Number of Loans Liquidated							12
	Collateral Realized Loss/(Gain) Amount							627,~~163~~295.7881
	Net Liquidation Proceeds							~~147~~174,~~759~~457.6929
	Cumulative
	Number of Loans Liquidated							13
	Collateral Realized Loss/(Gain) Amount							633,~~163~~459.7859
	Net Liquidation Proceeds							~~147~~322,~~759~~216.6998
	Note: Collateral Realized Loss Amount may include adjustments to loans liquidated in prior periods.
SPACE INTENTIONALLY LEFT BLANK
							3 Months Moving Average
Collateral Loss Severity Approximation by Groups					Collateral Loss Severity Approximation
				Page 19 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Realized Loss Report for November 25, 2003 Distribution
	Realized Loss Report for December 26, 2003 Distribution
	Realized Loss Report - Collateral
DEFAULT SPEEDS								TOTAL
	MDR							0.0406%
	3 Months Avg MDR							0.0103%
	12 Months Avg MDR
	Avg MDR Since Cut-off							0.01%
	CDR							0.5169%
	3 Months Avg CDR							0.1740%
	12 Months Avg CDR
	Avg CDR Since Cut-off							0.0715%
	SDA							3.0164%
	3 Months Avg SDA Approximation							12.1436%
	12 Months Avg SDA Approximation
	Avg SDA Since Cut-off Approximation							01.6726%
	Loss Severity Approximation for Current Period
	3 Months Avg Loss Severity Approximation
	12 Months Avg Loss Severity Approximation
	Avg Loss Severity Approximation Since Cut-off
CDR by Groups					Total CDR
SDA by Groups					Total SDA
				Page 20 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Realized Loss Report for November 25, 2003 Distribution
	Realized Loss Report for December 26, 2003 Distribution
	Realized Loss Report - Collateral
CDR Avg since Cut-Off by Groups					Total CDR Avg since Cut-Off
SDA Avg since Cut-Off by Groups					Total SDA Avg since Cut-Off
COLLATERAL REALIZED LOSS CALCULATION METHODOLOGY
Monthly Default Rate (MDR): (Beg Principal Balance of Liquidated Loans)/(Total Beg Principal Balance)
Conditional Default Rate (CDR): 1-((1-MDR)^12)
SDA Standard Default Assumption: CDR/IF(WAS<61,MIN(30,WAS)0.02,MAX(0.03,MIN(30,WAS)0.02-0.0095*(WAS-60)))
Average MDR over period between nth month and mth month (AvgMDRn,m): [(1-MDRn) * (1-MDRn+1) .......(1-MDRm)]^(1/months in period n,m)
Average CDR over period between the nth month and mth month (AvgCDRn,m): 1-((1-AvgMDRn,m)^12)
Average SDA Approximation over period between the nth month and mth month:
AvgCDRn,m/IF(Avg WASn,m<61,MIN(30,Avg WASn,m)0.02,MAX(0.03,MIN(30,Avg WASn,m)0.02-0.0095*(Avg WASn,m-60)))
Average WASn,m: (WASn + WASn+1 +.......+ WASm )/(number of months in the period n,m)
Loss Severity Approximation for current period: sum(Realized Loss Amount)/sum(Beg Principal Balance of Liquidated Loans)
Average Loss Severity Approximation over period between nth month and mth month: Avg(Loss Severityn,m)
Note: Default rates are calculated since deal issue date and include realized gains and additional realized losses and gains from prior periods.
Dates correspond to distribution dates.
				Page 21 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Realized Loss Detail Report for November 25, 2003 Distribution
	Realized Loss Detail Report for December 26, 2003 Distribution
	Realized Loss Detail Report - Loans Liquidated During Current Distribution
SUMMARY						LOAN GROUP
Total Loan Count = 1						Loan Group 1 = Group 1 Group
Total Loan Count = 2						Loan Group 1 = Group 1 Group
Total Original Principal Balance = 154,800.00
Total Original Principal Balance = 202,425.00
Total Prior Principal Balance = 153,923.47
Total Prior Principal Balance = 201,753.10
Total Realized Loss Amount = 6,163.78
Total Realized Loss Amount = 27,295.81
Total Net Liquidation Proceeds = 147,759.69
Total Net Liquidation Proceeds = 174,457.29
Note: Total Realized Loss Amount may include adjustments to loans liquidated in prior periods.
Loan Number			Original	Prior		Current	State &
&		Loan	Principal	Principal	Realized	Note	LTV at	Original	Origination
Loan Group		Status	Balance	Balance	Loss/(Gain)	Rate	Origination	Term	Date
40684912 0			154,800.00	153,923.47	6,163.78	8.990%	MN - 90.00%	360	Nov-27-02
42308452 0			141,300.00	140,851.36	26,705.85	10.650%	CO - 90.00%	360	Feb-07-03
					Page 22 of 23				© COPYRIGHT 2003 Deutsche Bank
43354208 0			61,125.00	60,901.74	114.96	9.990%	FL - 75.00%	360	Feb-18-03
					Page 22 of 23				© COPYRIGHT 2004 Deutsche Bank
	Ameriquest Mortgage Securities, Inc. 2003-4
	Mortgage Pass-Through Certificates
	Triggers, Adj. Rate Cert. and Miscellaneous Report for November 25, 2003 Distribution
	Triggers, Adj. Rate Cert. and Miscellaneous Report for December 26, 2003 Distribution
	Triggers, Adj. Rate Cert. and Miscellaneous Report
TRIGGER EVENTS								TOTAL
	Stepdown Date has occurred							No
	Delinquency Percentage							0.9185%
	Balances 60+ days							32,~~214~~887,~~152~~245.6907
	Ending Balance							~~351~~338,~~453~~472,~~327~~344.2389
	Credit Enhancement Percentage							1920.9268%
	Balance of Mezzanine and C Class							69,995,713.00
	Ending Balance							~~351~~338,~~459~~499,~~491~~640.0170
	Ending Balance of Fixed Loans - used for Trigger							0.00
	Ending Balance of Adjustable Loans - used for Trigger							0.00
	Trigger Event in effect							No
ADJUSTABLE RATE CERTIFICATE INFORMATION								TOTAL
SPACE INTENTIONALLY LEFT BLANK
ADDITIONAL INFORMATION								TOTAL
	Net WAC Rate Carryover Amt: Class A-1							0.00
	Net WAC Rate Carryover Amt: Class M-1							0.00
	Net WAC Rate Carryover Amt: Class M-2							0.00
	Net WAC Rate Carryover Amt: Class M-3							0.00
	Net WAC Rate Carryover Amt: Class M-4							0.00
	Net WAC Rate Carryover Amt: Class M-5							0.00
	Net WAC Rate Carryover Amt: Class A-1 unpaid							0.00
	Libor for Current Period							1.~~120000~~118750%
	Net WAC Rate Carryover Amt: Class M-2 unpaid							0.00
	Current Period loan level losses							626,~~163~~820.7881
	Current Recoveries or Losses from Prior periods							0475.00
	Total Current Losses							627,~~163~~295.7881
				Page 23 of 23				© COPYRIGHT ~~2003~~2004 Deutsche Bank

Filing Compare · ASSET BACKED PASS THROUGH CERTIFICATES SERIES 2003-4