Replacing Seat Rails for front seats

aiight, well i got a diff passenger seat from another member, but i haven’t been able to come up on a driver seat. my old passenger seat is in decent condition with no minor tears or rips, so i was wondering… whether or not i could just take off the rails/brackets and necessary hardware off my current driver seat, then install it onto my spare passenger seat.

i was unable to remove the bolts on the bracket that hold the backrest to the bottom portion. i didnt have an allen wrench that fit, was too small or too big, cuz its SAE. so i guess i need a metric allen wrench set. anybody know the size?
we discussed it a little here.