Come on guys... I'm contemplating using this cab as the COE parts donor in bulding the COE Suburban Cargo I've talked about. If a five window COE is special I'm going to have trouble cutting this one a part!
Grant that GMC motorhome front drive setups sound interesting. That would be a BOP pattern transaxle that would take a Cadillac 500 nicely, and I happen to have one standing by for just this kind of project. I also have three 1-tons sitting here, so finding the parts to do the rear would be easy.