rusty roof tear off
My 2 cents.
Nice work 72BlunBlu!
The donor car, spend the time to cleanly remove the skin. Spot weld cutter, etc.
Recipient vehicle, use a grinder to take out the spots where accessible. No need to be clean on remove. Just don't go crazy taking out any sub-layers of material. Clean up the first sub layer with a zirc wheel.
Good luck