Paint Or Undercoat?

Bodyperson said
This (wishing I new how to do that pointing up arrow thingy) What kind of look do you want? Bare steel can be tricky. Use a self etching primer before the epoxy. Life started sucking for autobody repair when they took the lead out of refinish products. Lead made it stick. The paint industry does seem to have a handle on it now. Look for products that say DTM. (Direct To Metal) Fusor makes some top of the line products. That old PPG DP product was awesome stuff until they took the lead out. Probably still the best bet though.

So YA... metal etch, PPG DP and Fusor sprayable seam sealer is my choice.

I also agree with this for sure, OR like the other member said, prime the bottom and have overspray on edges of bottom, like come factory. but I would if going for this use, DTM primer first, and then spay the grey Rustoleum type paint.

seems like ALL my projects came factory undercoated, which helped them live 50 years. I add undercoating to all mine because I drive them, not a racer, even though I doubt 5 lbs undercoat would slow me down!!!!!