What's your time frame and budget? I will basically be selling the whole underside of my XJ in probably 4 months which is a Ford 8.8 with an Ultimate 88 kit installed with 4.88 gears and a Spartan lunchbox locker. The front axle is a HP44 with Reid Racing Knuckles so it has manual hubs with 4.88 gears and a zip air locker. All bolt in to the factory locations/geometry, I also maybe selling my skid row gas tank skid and rear bumper with tire carrier. I currently run 35s but this set up should easily handle 37s.