I wouldn't bother with acid etching it.. By the time you rinse all the acid off with clean water, you're back to square one, as H20 will begin the rust process immediately... Phosphoric acid will bleed thru the paint, muriatic acid only etches concrete, hydrochloric acid is just nasty stuff..just bought a baja rack off mud a couple weeks ago (used). if i did not pic it up super cheep id be pissed..cuz its peeling like a banana with surface rust under the coating. wire wheeling all the loose coating areas then treating with acid then prime & paint. should be ok for a while.

