In order for the new floorpan to fit perfectly, the corners where the firewall, the floorpan, and the rocker meet had to be notched about 1 inch. The plasma was used for this, but a cut-off wheel could also work well. Another adjustment involved the four sets of two upward-facing tabs on the sides of the new pan. They needed to be bent inward a little, since they stuck out past the edge of each side. They would be bent or hammered back into position after the pan was installed.