I thought about trying to repair it, but its double walled in that area. I found out just how bad when I jacked up just the rear wheels to go under and replace a torn muffler hanger. Had it on jackstands at the two rear jacking points. All of a sudden a sound of ripping metal and the bolt at the rear of the subframe tore completely out, dropping the subframe about 4 or 5 inches. Later inspection showed that the U shaped rib stiffener at the front of the floor was completely rotted out. What I suspect happened is that when the windshield was replaced early on the installer didn't use pinchweld primer. Was getting leaks on the passenger floorboard even when not driven, I bet water and salt were leaking in between the inner and outer panels. With significant rust at the drivers side mounting point as well, I figured doing both sides was going to be very expensive. The rocker panel pinch welds are still mint on this car, by virtue of the mudflaps I ran on the car. I picked up a 95 silver MTX that has never seen winter, was parked in a barn every winter, and always garaged in the summer by the original owner.. The car's body is like new, just two tiny stone chips in the hood, a scratch at the rear of the drivers quarter, and that is about it, no door dings. It is a lot of work to move two decades worth of upgrades from one SHO to another, but compared to what I would have had to do to take it apart and hire a mobil welding outfit its probably a wash.