• Better Built Performance 426cid short block

• Whipple Superchargers 2.9L W175ax twin-screw supercharger system

• Whipple Superchargers 3.125" upper supercharger pulley

• ATI Performance Products 6% overdrive harmonic balancer

• MSD Performance fuel pump voltage booster

• NGK Spark Plugs LZTR7AIX spark plugs

• MotoRad 180° thermostat

• OEM Mopar Hellcat engine oil pump

• Gates HD Fleetrunner Micro-V "Green" belt

• All the miscellaneous OEM and aftermarket components to bring it all together

With the mechanical work wrapped up in the shop by TJ, John strapped her down to rollers for a custom calibration by Vlad via HP Tuners. With 93 octane in the tank, and the Whipple W175ax delivering ~9psi, output increased to a conservative 622.20whp & 597.66lbft! And even better, this setup has a LOT more jam in the jar when Carl gets the itch for more!