Dont Waste your Money
The Rear Box side for my Dually was so wavy I had to hand Block it down into the fiberglass to get it straight!
The fender was also full of body filler as if it was worked on by someone then coated with resin and not sanded.
It literally took me 2 weeks of sanding to get it to a product that I could put on my truck. I WISHED i WOULD HAVE BOUGHT A GM PANEL.