Nice looking project.
The rust sucks. I got super lucky-my GW was an original owner car fresh outta arizona or new mexico.
Anyways after reading the thread and lookin at the pics, i hate to ask, but have u considered radiator/intercooler/condensor to fan/engine clearance? Your pics show the tcase sittin in front of what appears to be the factory tank in the stock location? I used a 4bt cummins, 47rh, and an np208(208 was a hair shorter than the 241 fixed yoke) for my swap and i gotta say there was no way i could fit it in front of the factory tank with an intercooler and radiator? Unless maybe ur gutting the core support? How'd u get it to fit?