Doesn't that have a 7afe?? I if your serious about this, you're definately going to have to go FI. I've seen some people boost the 4afe engine and come out with 200+ hp. Is it worth it, probably not. I think you're better off swapping something in like a 4age, should bolt right in. Or go with a 3sgte, you can easily attain your 250+hp goal.
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1992 GTS 3sgte from hell! // 1990 GT liftback Stock 3sgte