I just picked up an 89 Comanche a couple of days ago. It's a 4.0/AX15/NP231/D44. It's already got some kind of lift, looks like rancho shocks all the way around, rancho springs up front and AAL in the rear. Around 3-4". It's sitting on 31s right now. I've already ordered a 2" budget boost (spacer front, shackle rear) and I'm going for some 33s". I lucked into a truck that is in super shape, been restored from front to rear. The only thing that sucks is the horrible gearing. I haven't figured out yet if it's got 3.07 or 3.54, but I bet this thing could do 130 mph if it had the power. You have to do some major downshifting on hills. I'll be regearing and locking within a year.
Now I just have to sell my YJ. The boss (wife) was all for getting the comanche, but can't stand two 16 year old jeeps in the driveway. She's a libby driver, go figure.
2001 TJ, Dana 44/30, lifted and locked, yada, yada, yada.