03-02-2004, 11:29 PM
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Ultimate Warrior
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Join Date: Dec 1999
Location: Escondido, CA, USA
Posts: 6,944
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If I remember correctly the "J" model had a 400 and the "SJ" model had a 428. Make sure you get the code number off of the block.
http://www.jimspontiac.homestead.com/Index.html
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