Here is a good link on XJ specs. Here


Your looking for everything you should want to. A dana 44 will of course have a different tag on it, but you will also be able to identify it by sight here. It was used on the XJ from 87-89. If you can't find one with a dana 44, look for one with a chrysler 8.25. It's not as strong as a dana 44 but if you get one with the 29 (97-01) spline shafts, it will withstand 33-35's nicely. I'm running an earlier 27 (91-96) spline 8.25 out of a cherokee in my wrangler and I'm very happy with it so far.

Look for a command trac (np231) or or selec trac (np242) T-case. The all wheel drive (249) T-cases SUCK, they ware out quickly.

If I were buying, I would look for a 97-00 with an auto and the 8.25 with the 231 T-case.