seems a divorced trans/transfer would require some fabrication... if your going that route your better off just going solid front axle... since your getting into the fabrication realm anyway.

Its just time consuming, you have to spend whatever available time you have on the phone/visiting junk yards... looking for parts

the other thing to try is tow/impound yards... not sur ehow it works in AZ but in CA they would impound CHP and Police wrecks at tow yards untilt hey went up for auction... you might e able to pick up an entire truck if the wreck was severe enough and get the parts that way.... then selling off whatever is left