Laying cab on rear window

[64chevmn]

I've just completed all of the metal work (inner and outer rockers, cab corners, partial floors) on my 64 C10 project. I want to clean-up the underneath of the cab and give it a fresh coat of paint before I put it on the dolly that I plan on building to move it around my garage. My question is; can I safely lay the cab on the back window so I have easy access to the underneath? I plan on laying it on a sheet of plywood with a 2-inch foam pad between the cab and the plywood. The cab is not painted, so I'm not concerned about scratching the paint but I dont want to "tweak" or "bend" anything by placing it in this position.

Thanks in advance...............Dan