Got the seats and carpet out today. The floor is in darn good shape, just a bit of surface rust in a few spots.
The seat foam is a different story. It is a odd shade of foam yellow/yuck brown and it smells like a septic tank backup.
I almost want to burn them so there isn't any risk of some new disease spawning from them or them evolving into something evil.
Thanks for all the advice, I am going to try some in my dd XJ to make nice and pretty.