I'm using one on my 4500/205, although it's Chevy stuff. Got it from a guy that's on Ebay...Jr Jeep Parts or something. Sells a lot of NV4500 setups with transfer cases for all sorts of different applications. Knows his stuff and gave me some good specifics on the machining processes he did to clear the shift rails and such. I think it was like 160 bucks and I haven't had a minutes trouble.
'86 Chevy K30 ('92 6BT, NV4500, NP205) Denny T Stage 1, SPS 62/71/14, 3200 gsk, pump turned up, 7x.011 sac, piston lift pump, full throttle mod, 181/210 cam, 3" intercooler pipes