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Class I.ÌýX" on the face thereof in substantially the form attached hereto as Exhibit A.

Class IÌývehicles constructed with areas for standing passengers, to allow frequent passenger movement;

Class I.ÌýA-1 Principal Balance as of the Cut-Off Date: $[ ] Cede & Co. Registered Owner Exhibit A-I-A-2 CUSIP MORTGAGE PASS-THROUGH CERTIFICATE Evidencing a Percentage Interest in a trust fund whose assets consist of, among other things, interests in another trust fund whose assets consists of, among other things, a pool of conventional one- to four-family mortgage loans formed and administered by PNC MORTGAGE SECURITIES CORP. This Certificate represents ownership of a "regular interest" in a "real estate mortgage investment conduit," as those terms are defined in Sections 860G and 860D, respectively, of the Internal Revenue Code of 1986, as amended. The issue date (the "Issue Date") of this Certificate is September 28, 1998. [Assuming that the Mortgage Loans underlying the Certificates prepay at the prepayment assumption used by the issuer in pricing this Certificate (i.e., 100% of the Prepayment Assumption as described in the Prospectus Supplement), this Certificate has been issued with original issue discount ("OID") of no more than $ per $100,000 of initial Certificate Principal Balance, the yield to maturity is %, and the amount of OID attributable to the short period is not more than $ per $100,000 of initial Certificate Principal Balance, computed under the exact method. No representation is made that the Mortgage Loans will prepay at a rate based on the Prepayment Assumption or any other rate.] Unless this Certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to the Trustee or its agent for registration of transfer, exchange, or payment, and any Certificate issued is registered in the name of Cede & Co. or such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein. Series 1998-8 Portion of the Class I-A-2 Principal Balance as of the Cut-Off Date Evidenced by this Certificate: $------------------------------------------ Class I-A-2 Remittance Rate: 6.750% Cut-Off Date: September 1, 1998 First Distribution Date: October 26, 1998 Last Scheduled Distribution Date:

Class IÌýmeans the class of directors of the Board of Directors with a term expiring at the annual meeting of stockholders of the Company in 2000 and every third annual meeting thereafter.

Class I.Ìý“Class IIâ€� and â€�Class IIIâ€� have the meanings set forth in Section 2.1(c).

Class I.ÌýA-1 Principal Balance as of the Cut-Off Date: $[ ] Cede & Co. Registered Owner Exhibit A-I-A-2 CUSIP MORTGAGE PASS-THROUGH CERTIFICATE Evidencing a Percentage Interest in a trust fund whose assets consist of, among other things, interests in another trust fund whose assets consists of, among other things, a pool of conventional one- to four-family mortgage loans formed and administered by PNC MORTGAGE SECURITIES CORP. This Certificate represents ownership of a "regular interest" in a "real estate mortgage investment conduit," as those terms are defined in Sections 860G and 860D, respectively, of the Internal Revenue Code of 1986, as amended. The issue date (the "Issue Date") of this Certificate is September 29, 1998. [Assuming that the Mortgage Loans underlying the Certificates prepay at the prepayment assumption used by the issuer in pricing this Certificate (i.e., 275% of the Standard Prepayment Assumption as described in the Prospectus Supplement), this Certificate has been issued with original issue discount ("OID") of no more than $ per $100,000 of initial Certificate Principal Balance, the yield to maturity is %, and the amount of OID attributable to the short period is not more than $ per $100,000 of initial Certificate Principal Balance, computed under the exact method. No representation is made that the Mortgage Loans will prepay at a rate based on the Standard Prepayment Assumption or any other rate.] Unless this Certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to the Trustee or its agent for registration of transfer, exchange, or payment, and any Certificate issued is registered in the name of Cede & Co. or such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein. Series 1998-9 Portion of the Class I-A-2 Principal Balance as of the Cut-Off Date Evidenced by this Certificate: $-------------------------------- Class I-A-2 Remittance Rate: 6.750% Cut-Off Date: September 1, 1998 First Distribution Date: October 26, 1998 Last Scheduled Distribution Date:

Class IÌýmeans Class I of the Board, as designated by the Company’s Certificate of Incorporation.

Class IÌýmeans small off-road engines greater than 65 cc to less than 225 cc in displacement.

Class I.ÌýA-1 Pass-Through Rate: For the first Distribution Date, 3.290 % per annum, and on any Distribution Date thereafter, the lesser of (i) One-Month LIBOR for the related Accrual Period plus the Class I-A-1 Margin for such Distribution Date and (ii) the applicable Interest Rate Cap for such Distribution Date.

Class IÌýmeans Class I EUR, Class Id EUR, Class I GBP, Class Id GBP, Class I CHF, Class Id CHF, Class I USD, Class Id USD, Class I SGD, Class Id SGD, Class I JPY and Class Id JPY Shares in the Fund.