418 Stroker, 621RWHP 648 lbs TORQUE Built by Laramie GM Auto Center Tuned by Nick at Mac Autosport. EForce SC, 2 3/4pulley,LPE dual fuel pump, JRE Twin fuel rail upgrade, posi clutch kit, RX oilcatch can and breather, Callies Compstar crankshaft and rods, Racing bearings, CP -13.8 race pistons, steel rings, Comp Cams X6 blower cam, Springs, HD timing chain and tensioner, Doug Thorley Tri Y LT headers, 89.7lb injectors, RPM rollbar, DSS1400 shafts, Simpson 5 pt harness, BMR Toe rods and trailing arms, led lights, RPM input and output shafts