4x4 Suburban questions

[66gmcguy]

Hello folks. I bought a 1961 suburban 4x4. It has a SM420 and a divorced T221. I am curious if it's possible to put a married transmission/transfer case (SM465/NP205 combo in particular) in without any major modifications? My main concern is if it will clear the floorboard. I don't want to do a transfer case drop or body lift to make it fit. I was wondering this because on squarebody trucks, the floors on 4wd cabs differ from floors in 2wd cabs (including 2wd 4 speed trucks) in that there is an additional hump to clear the transfer case.

I am not opposed to keeping a divorced trans/t-case setup either. I am just interested in putting in a SM465 and NP205 since parts are getting hard to come by for the SM420 and T221. That leads me to my next question: has anybody installed a divorced NP205 in one of these and what did it require other than drive shafts and shift linkages?