Yeah, this was only a small part of a much larger project. Putting in a new GM Performance Parts HO350, a TCI Truck Master TH350, rebuild the transfer case, repair a lot of rust in the cab (firewall, rocker panels and cab mounts, new urethane cab mounts, new shocks and lots of assorted parts to make it all work.
So, this would have been as good a time as any to change transfer cases. I'm running 33" mud tires with 4:10 gears and lockers now. 35" or 37" tires are in the plans eventually. I run trails in Florida which means mud so, the NP205 would probably be a good choice. Figured it was cheaper (already into this project for enough $$$$) to just use as many of the parts I already had.
I figure the t-case swap would have required new drive shafts, t-case shifter, maybe modification to the floor of the cab and maybe modification to the exhaust as well. So, it wasn't in the cards right now.
Thanks again for all the help.