The backside of the original bumper was soooo rusty, that I took it outside and used my air angle grinder with 2in Cookies to knock it down..Wheeew !! What a cloud of rust... Then I brought it inside and brushed the inside with Rust Bullet.. Yesterday I worked on the front bumper braces.. They are just as bad... But they do fit in the blast cabinet... Got one side done yesterday....Get the other done tomorrow.... Just gonna Kick back and watch Football today..:D