Damn!! Yeah, ZJ has all the same brackets, etc, just LP.
You should be able to find one for much cheaper than that!! I helped my mom's friend from work throw a new D30 in his 99 XJ, got a complete Dana 30 from another 99XJ with like 70k on it for 150 pulled! They had it on a forklift and helped get it into the back of the jeep!!
Also, if you want, my friend has a HP Dana 30 sitting in his backyard in Amherst, MA that he was gonna use but now won't be using. He was talking about selling it. PM me for his email if that sounds like something you'd be interested in....