I agree with Jack. 3 years at 13:1 w/680 HP, and no head gasket problems running Felpro 1016's. Now, if your planning nitrous, that's another story---- Bill
GT37 3600lbs...as featured on the cover of Pontiac Enthusiast Jan/Feb 2002 DOT/mufflers-all motor
6.49 @ 108
10.14 @ 133
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GT37 3625lbs..Fastest bench seat, column shift, all steel,no power adders car at Norwalk
1.35 w/29.5x10.5x15
6.42 @ 109
10.09 @ 133
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