I am in the same boat. My cluth sticks to the floor at high rpm's, the guy i bought the car from says it dyno'd at 380 hp and 420 tq off the bottle. I need advice on this also.
1999 Z28 M6. Mac Headers, Hooker exhaust, Motive 3.73 gear, K&N filter, Hurst shifter, Ram Powergrip HD, Billett Steel Flywheel, 35# injectors, Platinum NOS plugs, Cold Fusion Wet Nitrous, Edelbrock HD torque arm, Comp Cam 224/230 duration 580/590 lift, Double butterfly valve springs, LS2 adjustable timing set, LS6 oil pump