It's not hard, you just have to pay attention to the details so you get the best of the best when you're finished. :D It'd be the same with any year Jeep. If you buy a 2.5L/5spd XJ 87-99, you'll get your front driveshaft, t-case, and front/rear 4.10 axles. then you just need the older 4wd auto trans (87+ are computer controlled).
the only "hard" to find item will be the trans, but car-part.com can help with that. :thumbsup: