either have to find a donor car or check the archives. there should be some posts about using the early mustang ropops and making them work.
i went to www.mustangsunlimited.com and purchased 1971 mustang floor boards.... they were 60 for each side... and i cut out my bad ones and welded in the entire sides.... it fit pretty good but using a saws-all, hacksaw, high speed cutter, grinder, drill, chisel and a ball peen hammer.. then welded them together havent had any problems.. the mustang floors are flat, so you will need to redrill for your seats and all that.. but no big deal it took me 2 days saturday.... cut out drivers side rusted metal and welded in new metal sunday....cut out passenger side metal and then welded in the new panel i dont recommend cutting the whole floor out at once... these unibody cars use the structure as a whole.. if you cut it apart, nothing will line back up afterwards.
