ok i have about 500 bucks... I have a 93 z m6...mods are cai(homemade), kyb rear shocks, tb-pass, gutted cats, flowmaster exhaust(stock headers), fan mod...i was thinking in getting some software to tune my own car( tuner cat)...or since my car has about 130,000 miles to go ahead and fix up the trans clutch, flywheel and those types of parts...or what do ya guys think i should get.