First, you gotta understand that the "+2" really only fits small kids or midgets, so nobody really sits back there. I don't have kids and I don't know any midgets. HAHA Yah...that's why it looks newer (other than dusty).
I do however have sun damage on the top of the rear seat. I guess thats inevitable since the sun has been beating down on it for 30years.
I really don't think you can fit any kind of small bucket seats back there other than baby bucket seat made by GRACO. HAHAHA!!
I've seen other 2+2 owners just keep the seat folded down for more cargo room. In my experience, having a 2+2 saved me a few times when I had to pick up some large parts....if I had a coupe, I would've been $#!T Outta Luck.
-goki