Who doesn't want more power out of their rig? The stock 4.0L I-6 was replaced with a much larger 5.7L Hemi motor from a 3/4-ton Dodge Ram 3500. AEV provided a wiring harness and a Hemi conversion system in order to make the swap go smoothly. With that much power now under the hood, you really need to hear this Jeep in person. Keeping the new motor cool is a Be Cool aluminum radiator.