I just installed one last week...
I just put one in the Compact Jr. last week. I didn't realize that they offered a high profile model, just bought the regular fan. The price seems to have gone up on these fans in the last couple of years, mine was $170 US, after 30% discount. It sticks down about 1 1/2", I got the spacers from FF, and epoxyed the garnish (after trimming), in place. I wish that I had made a wood spacer, and may still modify it, especially since the CJ has a sagging roof (seems to be the norm in CJs). I will put some sort of flexible conduit around the wires, as they have to have extra length to allow for the pop-top roof.
I just read Scott's post, and wish I had know about him 3 weeks ago before I bought mine!!!! I would have gotten the high profile, and saved money, d**m.:o