A guy I work with has a friend who sells just parts for grand prix's, so I was thinking of just finding a l67 and just swapping it in there. My tranny is slipping too so I will probably get a hd tranny while im at it. I would go with a turbo but spending the money on the engine and tranny already will be quite a bit and I wouldn't have the extra money for a turbo yet. I'll just stick with the supercharger. My goal is too run maybe high 12's with it. What could be done with the supercharger to do that? How big of a pulley with the requirements?
