With tax season around the corner and a nice bonus on the way, I am seriously contemplating a 4bt conversion. Back-story: I put a set of 33's on and destroyed my gas mileage. I went from getting nearly 21 mpg's to 14.5 on a good day. I hear that (depending on the build) you could see 24 mpg's on average and still perform offroad with a 4bt.
I have done a lot of research on the subject and have found 2 kits: River Raider and Jeepyard. Does anyone have any experience with these companies?
Also, the engine will cost me between $3000-$6000 with a rebuild kit somewhere in the neighborhood of $500. I have rebuilt tons of 7.3's (if I could stuff one in the jeep I would), but never a Cummins product. Anyone ever done their own rebuild?