I put buckets from an early Honda Civic into my 53 Suburban. They were skinney enough so a body could walk between the seats thru the center in route to the back - This was in the early 70's during the hippy van craze. I had no rear seating, only a 4"foam carpet pad and bean bag chairs. What I'm thinking for it's new life would be a set of seats from a late model mini-van. With front buckets, there would be seating for 7 and every seat with a view.
Jim