Matts correct, y'all will jus have one chipped to shit paint job if ya dont apply a good etc primer as a base.... i have used a variety of stuff before..all depending on what it cost at the time.. 2K works fine, but ideally i like to use some sort of stove enamel,only prob is y'all have to get that sucker pretty warm to cure it.
but...its frickin bulletproof once it has cured.... as with all paint jobs, its all in your prep..if ya dont remove the rust n all that crud properly, it'll flake n chip hella easy...take ya time n get some decent paint n y'all cant go wrong.