Since the outside has small rust marks, bunch of tiny dots everywhere i simply clayed it very throughly. also the roof was horrible with some type of red over spray, it showed up very well on the clay so my bar was shot after that. I hit the outside twice with the rotary using optimum polish and sealed it with some 4 star sealant. Truck came out like new as i said,and even the customer said it, but he didn't like the price.