Stage 3 Performance Package (2006-2013 Chevrolet Corvette C6 Z06) PARTS ONLY2 American Racing Long Tube Headers w Off Road X Pipe Halltech Black Killer Bee MF108 Cold Air Induction RPM Custom Cam Package Includes RPM Custom B3 Cam, Hardened Pushrods, GM Timing Chain, GM Water Pump Gaskets, GM Crank Pulley Bolt , GM Front Seal, and NGK TR6 Spark Plugs Race Proven Motorsports Custom Spec'd CNC'd Ported and Polished LS7 Cylinder Heads w CHE Precision Bronze LS Valve Guides, . 660 Dual Valve Spring Kit, Manley Stainless Steel