I love how all the know it alls come around to put you down when you're learning but when you rise up and do some showcars they're quiet as a mouse. I always put pride to the side to give it up to the next man but who cares, I'm too busy being busy!
the body mounts go right through these floor patches and the metal was lower around the hold. What I did at a later point(not pictured) was sandwich a socket between the floor and frame and used the pointed end of a plastic mallet, then hammered the lower area flat. It worked very well.