Paint Or Undercoat?

The best thing that I've ever heard of for protecting the floor boards is the old Imron/(Emron?) paint. I knew a guy who used it on a 71 Cuda floorboard and then needed to take it off to do a little more work later. He couldn't get that stuff off, even pounding it with a ball peen hammer, he couldn't get it to chip off at all... :violent1: #-o