POR15, undercoat, or sprayon bedliner?

Oh yea, interesting, so the epoxy is the bonding agent to the metal, then the eastwood over that for heavy durability.. there must be a time window to apply eastwood over epoxy primer for proper chemical adhesion if that is even possible.. hmm, I believe por15 says not to put their product over other products.

you have a 12 hour window to apply your top coat other wise you need to scuff the surface