Multiple styles of seats were available throughout the years. There are two common seat styles, the Camaro style (high back seat, no separate headrest), and Firebird style (low back seat, separate headrest).
These seats were all made prior to seats becoming complicated. As a general rule all you'll need to power up these seats is just a positive charge and a ground. If you can't run the circuit any car audio shop can do it for a nominal charge.
These seats may fit the pre 1992 models as well, check measurements prior to purchase.