I wouldn't use the new lead free ppg epoxy. It's non sanding and it pretty much sucks because of that... same with omni, nason etc. Maybe as a sealer, but not on bare metal.

If you want good epoxy you can sand, use SPI.

68 Road Runner, 69 Belvedere, 71 Challenger Vert
340 barracuda, 01 Ram CTD, 95 Ram, 04 Ram, 85 Daytona turbo Z
66 GTO, 06 Magnum RT AWD. 07 Ram CTD, 07 Ram