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Agree with John W - - we have 20/21 in a 3.8L race engine and provides good torque curve - what we were looking for to stay in class and have better race starts.
Regards,
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2002 Porsche Boxster S Cobalt Blue/Blk/Blk
Crew Chief for Son's 1978 Porsche 911SC Original Porsche Mocha Brown 3.8L NASA race car
Previous Porsches: 1958 356 Red Coupe - 1972 914 Blue -1972 911T Coupe Aubergine
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