OK, so with the bed off it was time to address the cab, after doing some measuring it looked like with the radiator support out of the way the cab could be lifted and the chassis rolled away. The cab removal and stripping the wiring harness from the engine/trans took 2 days.
All kinds of connections to figure out.
It all cleared with 1/2 inch above the cab and 1/4 inch above the bumper cap on the way out.
Now I have a solid donor chassis to work with, a good running drive train and a solid body. How hard could this be?
Rob