Question About The Ciera

ok my buddy has a 93 cutlass ciera sedan

i am wondering if those ever came with fold down back seats

he has 2 12" subs in the trunk and the back seats cut out a lot of the bass
we want to add in fold down seats
its pointless to walk around the junkyard trying to find some folding seats if they were never made

not looking for someone to sell some
just wondering if it was ever offered
if so then we can hit up the yard


thanks

im thinking if worst comes to worst maybe do some modification and maybe add some folding seats from a ciera wagon