The molded foam for a bucket seat is Waaay more complex than the flat foam that is the mainstay of bench seats, even if the bench stuff needs to be sculpted a bit. I've always had bench cars, until this latest 70 Dart GT, and I would never even try to do my own foam for them.
Ouch..... as Always, my Dreams are Crushed! Lol. Realism is always loved and appreciated! Now if I can figure out exactly why you felt that way, maybe we can dissect it, and I can try to butcher up my own stuff... hahaha!