Don't overlook 4 doors for buckets. Some of them had a set of buckets that didn't fold and a buddy seat and looked like a high back bench seat.
I have (I think?) buckets out of a '75 Valiant Brougham in my '74, which confuses me now because the '75 should have had a shorter slide on one side due to the catalytic converter and I don't remember having to swap one. Either way, the only other trick is you need a latch to make it fold forward.
Seat latches for buckets out of a 4 door