what about arp studs and alot of torque? Like 85-90 lbs? I didnt resurface my block and torqued my head to 85. Its held 13-14 psi fine now for a while.
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1990 Targa Turbo apexi 3" MHG
FOR SALE!! 1988 Supra Targa Top Turbo
3" Magnaflow
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