From the pics, it looks like the floor pans have a flange on the outside edge that is turned down to be spot welded to the inner Rocker and kick panels. And on the inner side a short flange turned up to be spot welded to transmossion tunnel. Are the current floor pans you stock like the ones shown in the product photo?
Floor Pan Patch Panels | Driver + Passenger | 66-77 Ford Bronco