This 5.7L Hemi was a low-mile takeout from a Jeep Grand Cherokee. Burnsville installed the 6.1L Hemi intake to give the mill a horsepower boost. They also used the new AEV Hemi/JK wiring harness. The AEV harness is OE quality. To keep JK Hemi swaps cool in every way, Burnsville has designed an efficient aluminum radiator that so far has kept our mill cool, even on hot days on long, slow, uphill grinds. Behind the Hemi is a 545RFE automatic transmission. It bolts in and doesn't require any adapters. All electronics in the JK interface (CANbus) just as they did when the Jeep rolled off the assembly line.