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502 Posts
Dyno by '21st Century Muscle Cars' (Addison TX)
My Mod's;
Doug Thorley 1 3/4" Tri-Y LT headers (No Cats)
Slp Underdrive Pulley
Mufflers Delete
Airaid MXP CAI
MSD Spark Plug Wire Set with NGK TR-55
CMC-30 227_239 Camshaft (Custom Grind for '21st CMC' by Comp Cams)
Heavy Duty double valve springs, titanium retainers, 10 degree locks & seals, Spring Seat
559 "crank horsepower"; 475.5 RWHP and 430.9 ft-lbs of Torque