After stripping everything out, i made steel patch panels for the holes.
I used a do it your self spray fit from LinerXtreeme. its not quite as good as LineX or Rino, but far better than Herculiner.
On the floor i used fiber board and made a speaker box on the end
I cut the edges of the back panels to make trim pieces. and redid the head liner with diamond plate vinyl.
Oh the carnage.....