I paint my inner fenders, running boards, bumper brackets, and upper and lower radiator baffles with epoxy primer on bare metal, them high- build sandable primer, then rattle can Rustoleum gloss black paint. Yes, I said rattle can. It flows like butter and really shines on smooth surfaces. Touch up is a breeze since it flows so nice and Ace Hardware always has it in stock.
I have won first place in all of the major expert judged shows in my area with this scheme.
