Jigs for hanging or supporting the frame from underneath. They're made out of threaded rod.
I welded a nut to a piece of flat steel and bent it a little, that way you support the frame from inside the rubber support holes. I use jack stands and c-clamp the square threaded rod to them.
I made a section out of paper to simulate the frame, kind of dark...sorry about that.
Swivel hooks welded to the rotissorie, then you can roll the body over to any position you want.