1967 Fury 4 Door Seat Interchange

[sstrubbe]

I have a 67 Fury 4 door that I am looking to upgrade the seats to something a little more firm and better shape. Currently it has full benches in the front and the back. Can anyone tell me what would be a simple bolt in that would be more stiff? It would be cool if it was a bench with an arm rest.

Thanks!

Shane