Take Out The Seats?

I have a 1962 Dodge Custom 880. Big C-Body Mopar if you're not familiar with it. I am gutting the interior, and got the front bench seat and old nasty carpet out no problem, but I can't figure out how to get the rear bench seat!!

I can't seem to get underneath it, and I don't see anything obvious when I crawl in the trunk and look the back of the seat. I yank at it and it seems a little loose, but nothing gives.....

Any ideas? Anybody with a similar car that has taken out the interior before?

Any ideas GLADLY welcomed!

dougiefresh