72 Demon Bench seats

as far as them being interchangable, i couldn't say for sure. the l shaped covers use 2 screws to attach them to the seats hing. if there are 2 screw holes there and they look in the correct place. then i would try the l shape brackets. if it dosen't line up then use the ones that were on it before. you can always go to a yard and get some to try first.