new belt that bypasses everyhing but crank and waterpump... jus for the track, full exhaust with o/r pipe.. 4.10 or 3.73.. shift kit any maybe some more...
Belt and exh. Should be worth a 1/10th or 2/10th off. Gears and a shift kit will pick up about the same. I say about 3/10th's in the 1/4 and some more mph
I think you should throw in a stall converter, 4:10 gears, and exhaust and you'll see a good 4-5 tenths for sure. That belt thing wont do to much, never ever did that to mine.