I have a 05' Rubicon Unlimited with a 4.0L <img src="/forums/images/graemlins/sleeping.gif" alt="" /> that just lacks what is needed with the 39.5 Irok's, 8" lift, winch, rock bumpers, rock rails and the weight goes on and on...
I am about to do this build and thought of sharing this info with you. <img src="/forums/images/graemlins/cheers.gif" alt="" />
http://www.rockcrawler.com/techreports/stroker40/index.asp