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Michael Mattiaccio's 1969 GTO
(In His own Words)

just an update from 2008,the car now runs at 12.5 @ 107 in the quarter thanks to SDPERFORMANCE cutting my cast iron intake to Cliff Ruggles specs with a Cliffs Q-JET.

link to before performance http://sdperformance.com/customerCars_01.php?carID=67


News & Events

End of 2018 is fast approaching!!
Well it's been a while since we had an update on what's been going on at SD so here's a quick overview. more >>
Northwind Intake manifold Dyno Testing.
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2009 What a Year!!
Well we're coming to the end of 2009, to say it's been a challenge is an understatement. Three days into more >>



Engine Specs.