After the metalwork was completed on the bottom side of our 1969 Pontiac Firebird "Routy", we applied some Eastwood Epoxy Primer to the underside and inside of the body shell to prevent rust and to provide a base for the next steps. We then sealed all the seams with 3M Automix Heavy Bodied Seam Sealer (8308) using their pneumatic applicator. We like to mask off the seams with 3M tape, then apply the sealer, brush it smooth, and then peel the tape before the sealer hardens. The sealer ensures no moisture will creep between the panels and start to rust. Once sealed up, we scuffed the primer and applied several coats of Eastwood 2K Ceramic Chassis Black on the bottom and inside of the body. The 2K Ceramic Chassis Black looks like the factory black used on chassis parts, but is far more durable than regular paint.
