So ,excuse me for being frugal but could I use a spray can of epoxy primer over the bare metal for adhesion and then buy a gallon of urethane to spray the whole car,? Hate to buy 2 gallons of primer.
Keep in mind that a spray can is a primer with a little epoxy resin added to it not a true automotive grade two part epoxy. I'm not saying it won't work, I'm just saying.