DOMINION SURE SEAL 24005 SVG2 Gravel Guard, 20 oz Can, Silver, Aerosol, Medium Texture
Duplicolor RGA101-2 PACK BLACK Rocker Guard Coating Impact Resistant - 14.5 oz | eBay
How should I go about applying the rock guard stuff, also the places that have a bit of metal exposed and have started to surface rust, should I sand to bear metal