I have redone my jeep with Hurculiner from that Dupont stuff, It hasn't held up as good as the Hurc has, on say bare metal that takes tons of abuse (i.e. bumpers, rocker sliders). But my Rocker knockers was done in the Dupont bed liner and have held up for over 2 years now, but I had them shot blasted and dipped in primer before I added the DuPont bed liner.