Xtra Power Mercedes SLS AMG Kompressor vs Katech Corvette Z06 (big cam, longtube headers etc)
http://www.facebook.com/GTBOARD Xtra Power Mercedes SLS AMG Kompressor 730 HP 880 Nm vs Katech Chevrolet Corvette Z06 "big cam" changed camshafts, longtube headers and race cats 630 HP)
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