If you’re putting 75 seats in a 75 car then you should be good to go. Double check now to be sure though. It’s the inner track on the drivers side that changed to reflect the added hump in the floor for the cat.
I checked with the guy I got the seats and tracks from, and he's almost certain the seats are '75, but thinks the tracks may be '74. In addition, I currently have a bench seat...so I think I may have a modification or two in my future. At the very least, it looks like I have more research to do, or just take the bench out and see what I can see.
