I need to brace the floor across the cab and decided to use some 16 gauge sheet metal formed into a C channel. My son's brake handled most of the pieces with 3/4 inch sides, but the 3/16 inch sides did not come out straight. I had to finish those with a hammer and dolly.
Cut the old floorboard from the S10 cab. The rear body mounts are undisturbed by the cuts. I made sure to leave the front mounts in place, too. I plan to remove the seat mounts, though. I can leave the outer seat belt mounts but the inner mounts are too high and will have to be removed.