I just purchased a Cummins R2.8 To swap into my 97 Jeep TJ. My main goal is low end torque and fuel economy mostly off road. My Jeep is mostly built, with the exception of the engine. If someone needs a good running 4.0, let me know it will be for sale soon. At this point I think I will pull the body off of the frame to do the engine install. It will mean tying up my two post lift for a little while, but hopefully not too long. The engine was supposed to show up on Fed Ex freight today, but I might be waiting 30-60 days for my adapter and motor mounts to show up from Quickdraw. I have decided to ditch my plans for retaining the A/C because I don't think it will be worth the trouble. My last engine swap was a 24v Cummins into a 1985 Suburban with NVG 4500 trans, NP 205 transfercase, D-60 front with detroit and 14 bolt rear with detroit, it was a cool rig. This one should be easier, I hope!