65 Fury seat differences

[65Fury440]

I have a 65 Fury 3, 2 door hard top. The seats aren't original , I have no idea what the are out of. The rear seat sticks up a couple inches above the package tray and looks crappy. I have noticed Sport Furys have a funky rear seat back that dips down, and the package tray cascades down behind it to provide a bucket seat effect.
What other seats fit a 65 Fury? I'm guessing a B body seat more that a C body seat. I'm hoping someone knows offhand.

 

[Clover]

The Fury III is high line and I think it has the dipped rear seat. My '65 Fury III had it, but it was a convertible with rear speaker.

 

[Defurious]

If you look at my thread entitled my first C Body There is a photo bucket link on page 2 one of the pics shows the backseat area you are talking about