I put a YJ tub and 4.0 on my CJ frame and used the CJ nose. The trouble I had was that the inner fenders didn't have the room for the stock wrangler airbox. I solved this with a K&N aircharger. The radiators have some differences too. although I'm not sure if they'd be an issue for you. I believe, (i may be wrong) that the wrangler hood may be an inch or so longer too.
West, do you have any pictures or other info on you tub swap? I have read a lot on this subject on different websites, but would always like more information. I about to undertake this in the next couple of months and would love to hear experiences, tips, or whatever about it.