TERMS SHEET This terms sheet contains selected information for quick reference only. You should read this Supplement, particularly "Risk Factors," and each of the other documents listed under "Available Information." Sponsor:    J.P. Morgan Securities Inc. Trustee:    U.S. Bank National Association Tax Administrator:    The Trustee Closing Date:    June 30, 2004 Distribution Dates:    For the Group 1 and Group 2 Securities, the 16th day of each month or, if  the  16th  day  is  not  a  Business  Day,  the  first  Business  Day  thereafter,  commencing  in July 2004. For the Group 3 Securities, the 17th day of each month or, if the 17th day is not a Business Day, the first Business Day thereafter, commencing in July 2004. Trust Assets: Trust Asset Group Trust Asset Type Certificate Rate Original Term To Maturity (in years) 1 Ginnie Mae I 6.0% 30 2 Ginnie Mae I 6.0% 30 3 Underlying Certificate (1) (1) (1)Certain information regarding the Underlying Certificate is set forth in Exhibits A and B to this Supplement. Security  Groups:    This  series  of  Securities  consists  of  multiple  Security  Groups  (each,  a "Group"), as shown on the inside front cover of this Supplement and on Schedule I to this Supplement. Payments on each Group will be based solely on payments on the Trust Asset Group with the same numerical designation. Assumed Characteristics of the Mortgage Loans Underlying the Group 1 and 2 Trust Assets1: Principal Balance2 Weighted Average Remaining Term to Maturity (in months) Weighted Average Loan Age (in months) Mortgage Rate Group 1 Trust Assets $400,000,000 354 6 6.5% Group 2 Trust Assets $476,403,000 350 10 6.5% 1As of June 1, 2004. 2Does not include the Group 1 and 2 Trust Assets that will be added to pay the Trustee Fee. The actual remaining terms to maturity and loan ages of many of the Mortgage Loans underlying the Group 1 and 2 Trust Assets will differ from the weighted averages shown above, perhaps significantly. See "The Trust Assets – The Mortgage Loans" in this Supplement. See Exhibit A to this Supplement for certain information regarding the characteristics of the Mortgage Loans included in the Underlying Trust. B-11