Certain  Characteristics  of  the  Ginnie  Mae  Multifamily  Certificates  and  the  Related Mortgage Loans Underlying the Group 1 Trust Assets: The Ginnie Mae Multifamily Certificates and the related Mortgage Loans will have the following characteristics, aggregated on the basis of the applicable FHA insurance program: Group 1 Trust Assets(1) FHA Insurance Program Principal Balance Number of Trust Assets Percent of Total Balance Weighted Average Mortgage Interest Rate Weighted Average Certificate Rate Weighted Average Original Term to Maturity(2) (in months) Weighted Average Remaining Term to Maturity (in months) Weighted Average Period from Issuance(2) (in months) Weighted Average Remaining Lockout Period (in months) Weighted Average Total Remaining Lockout and Prepayment Penalty Period (in months) 207/223(f) $  90,820,926 24 29.45% 5.905%  5.652% 402 398 4 17 115 232/223(f) 61,382,624 12 19.90 5.682 5.428 411 405 6 16 114 221(d)(4) 49,974,588 11 16.20 5.798 5.546 467 452 16 12 94 223(a)(7) 36,655,154 13 11.89 5.905 5.613 361 356 5 11 83 223(f) 36,419,753 13 11.81 5.899 5.649 420 417 3 13 118 223(f)/223(a)(7) 9,335,546 2 3.03 5.350 5.100 419 417 2 21 117 220 7,932,200 1 2.57 6.400 6.150 477 467 10 46 106 232 7,397,477 3 2.40 6.544 6.271 320 295 26 26 91 232/223(a)(7) 3,928,934 2 1.27 5.495 5.183 322 312 10 7 110 221(d)(4)/223(a)(7) 3,398,185 5 1.10 7.012 6.640 324 298 25 23 81 236 1,148,598 2 0.37 8.500 8.126 478 65 413 0 0 Total/Weighted Average: $308,393,986 88 100.00% 5.871%   5.610% 410 402 9 16 106 (1)  As of March 1, 2007 (the "Cut-off Date"); includes Ginnie Mae Multifamily Certificates added to pay the Trustee Fee. Some of the columns may not foot due to rounding. (2)  Based on the issue date of the related Ginnie Mae Multifamily Certificate. The information contained in the preceding chart has been collected and summarized by the Sponsor based on publicly available information, including the disclosure documents for the Ginnie Mae Multifamily Certificates. See "The Ginnie Mae Multifamily Certificates – The Mortgage Loans" and Exhibit A to this Supplement. See Exhibits B, C and D to this Supplement for certain information regarding the characteristics of the Mortgage Loans included in the Underlying Trusts in Security Group 2. Lockout Periods and Prepayment Penalties:    For Security Group 1, certain of the Mortgage Loans prohibit voluntary prepayments during specified lockout periods with remaining terms that  range  from  0  to  64  months,  with  a  weighted  average  remaining  lockout  period  of approximately 16 months. For Security Group 2, certain of the Mortgage Loans prohibit voluntary prepayments during specified  lockout  periods  with  remaining  terms  that  range  from  0  to  95  months.  See  the Updated Exhibits A in Exhibit D for additional information with respect to remaining lockout periods. Certain of the Mortgage Loans provide for payment of Prepayment Penalties during specified periods beginning on the applicable lockout period end date or, if no lockout period applies, the applicable Issue Date. See "The Ginnie Mae Multifamily Certificates – Certain Additional Characteristics of the Mortgage Loans" and "Characteristics of the Ginnie Mae Multifamily Certificates and the Related Mortgage Loans" in, in the case of the Group 1 Securities, Exhibit A to  this  Supplement  and,  in  the  case  of  the  Group  2  Securities,  the  Updated  Exhibits  A  in Exhibit D to this Supplement. Prepayment Penalties received by the Trust will be allocated as described in this Supplement. C-36