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Registered
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 11,238
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You don't need much, if any, head porting to reach the max power allowed by CIS, about 400 rwhp.
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2014 Cayman S (track rat w/GT4 suspension)
1979 930 (475 rwhp at 0.95 bar)
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