Fitch Affirms 8 Classes from 3 Keystone Subprime Transactions

NEW YORK--(Business Wire)--
Fitch Ratings has taken the following rating actions on eight
mortgage pass-through certificates. Unless stated otherwise, any bonds
that were previously placed on Rating Watch Negative are now removed.

Keystone 1997-P3

--Class M-2 affirmed at 'A+';

--Class B affirmed at 'BBB';

Deal Summary

--60+ day Delinquency: 0.00%

--Realized Losses to date (% of Original Balance): 12.44%

Keystone 1998-P1

--Class A-5 affirmed at 'AAA';

--Class M-1 affirmed at 'AA+';

--Class M-2 affirmed at 'A';

--Class B affirmed at 'BBB';

Deal Summary

--60+ day Delinquency: 1.99%

--Realized Losses to date (% of Original Balance): 13.81%

Keystone 1998-P2

--Class A-5 affirmed at 'AAA';

--Class B-1 affirmed at 'BBB-';

Deal Summary

--60+ day Delinquency: 5.24%

--Realized Losses to date (% of Original Balance): 14.57%

Additional details are available in the following research,
available at www.fitchratings.com:

--'Downgrade Criteria for Recent Vintage U.S. Subprime RMBS' (Aug.
8, 2007);

All of Fitch's ratings criteria for U.S. subprime RMBS available
at www.fitchratings.com/subprime. For a list of deals currently under
analysis please visit www.fitchratings.com/smartview.

Further information regarding current delinquency, loss, and
credit enhancement statistics is also available at
www.fitchratings.com.

Fitch's rating definitions and the terms of use of such ratings
are available on the agency's public site, www.fitchratings.com.
Published ratings, criteria and methodologies are available from this
site, at all times. Fitch's code of conduct, confidentiality,
conflicts of interest, affiliate firewall, compliance and other
relevant policies and procedures are also available from the 'Code of
Conduct' section of this site.

Fitch Ratings, New York
Tara Sweeney, +1-212-908-0347
Michele Patterson, +1-212-908-0779
Sandro Scenga, +1-212-908-0278 (Media Relations)

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