I have a 1996 Gt non PI, 5spd. I have 4.10 gears, off road x-pipe, catback, plugs and wires, fenderwall intake, short shifter, hardened tranny and engine mounts, King Cobra clutch, lowering springs, and I have 18inch saleens replicas with 285/ 40/18 Sumitomo street tires, and a different...