stock gp vs stock ga it wins due to gear ratio, and being 350 pounds lighter then the gt's.
if your modding and staying n/a, then you've already accepted the fact that anything done other than going with forced induction from this point on is pretty much useless, and will result in exactly what you had before: a slow car
Fixed
1978 F250 2wd (460 c.i.d. / C6)- soon to give up the powerplant to an '80-'86 F150
White 2000 Grand Prix GT coupe One still slow and loud... other one scoots just a bit.