Been mocking things up today. I will need to raise the hood & dash about 1 to 1 & 1/2", and do some minor angled cutting above the axle pivot housing to give oil pan clearance. I have to machine a flywheel adaptor for the pulley that drives the hydro belts before I can weld in engine mounts. The same pulley is where the rear PTO shaft bolts to. The radiator takes up all the room where the battery originally was located, but I "think" I can make room for a GT size battery beside the engine inside the frame rails.
It will be fairly involved, but to me, it'll be worth the effort. It took me 5 years to finally finish Hogzilla, and may be quite some time for this project. I'll hack at it when I find time.
The hood actually closes in factory position, but not enough room left for air filter hose which comes out the top side of the valve cover.