Very quick look at the weak areas at rear spring support

This was a message topic I had with one of the viewers about this rear area, the section in the corner of the rear seat areas inside had split away from the seat base and had about 1 1/2 to 1" gap. I could not understand how this could happen with so mane different panels including the rear wheel tub itself holding everything in place. This is really just to show the viewer what it looks like when cut away from the outside.
I need to strip all this out anyway as the metal is so pitted and weak its not work leaving in even if I can grind it back to being shiny its going to be 1/2 the thickness it should.
Unlike other areas this is not that bad to repair.
But with sections split with gaps as big as I seen in the images something is seriously up with the shell or someone has already had a go at trying to fix this area from the inside !