Update!
Pulled the back bumper off
Sanded down, here's the underside of the left corner. Previous owner must have backed into something and pushed it up on the bottom.
Used this rocker guard stuff for the brackets, bottom and inside
Painted theses
Also, bought this momo off a buddy at school. He pulled it off a b2000 that had be written off, so it already has the right hub! Not bad for $40 bucks!