22" GM Transport Steel Wheels on Square body? Anyone?

[scary gary]

First, I'll say that I've searched over the past 2 weeks.. here, other forums and google for answers or pictures, but come up empty.

I am curious to know if anyone has attempted to slide a set of these beautiful 22" GM transport steel wheels on a square body? Whether by using adapters or swapping rotors/axles/etc.. If anyone has experience with this, please shed some light.
That being said, I've already got a set on the way. I've done A LOT of calculations and its looking like its possible with about a 2" adapter (to make up for backspacing and center bore issues). And I am curious of the tire choice and clearance issues.
Perhaps I'll be the one to answer my own questions, but I figure I could ask since I couldn't find anything.

Any help is appreciated. Thank you
NOT MY PIC.. (just for reference)