painting interior metal

With rattle cans , compressors, everything, you get what you pay for.
I painted my interior pieces with appliance epoxy (refridgerater paint) gloss black. 3 years ago. Still looks good. I removed everything and took it to the workbenchTrying to tape out the panels at quarter windows was too much trouble. Scuffed it all to get a good bond. Covered the light surface rust on insides with Rustoleum rust reformer. I removed the door panels and taped out like factory did. Took the bolts out of the vent windows and lifted them a couple inches rather than try to tape around them. Remember not to close the door with the vent window out of its proper position !