250 isn't too hard to accomplish on a 3s. Ricksta seems like you have alot of research to do. For example twin turbo setup on a fwd 3s? Anything over 300hp is retarded on a fwd. No traction, it would be time to move on to a awd setup or mrw. Trust me i know from experience. I could burn tires up through 3rd gear. Its not very fun to lose traction.
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1992 GTS 3sgte from hell! // 1990 GT liftback Stock 3sgte