I have bought and installed Fiero drivers seat tracks in my '91RS. I have gained inches of headroom.
This was an easy improvement.
I bought the seat tracks from "The Fiero Factory" for about $60 delivered from Al. to Id. ($35 for tracks)
A very worthwhile improvement.

 

Any pics? I would like to see that.

 

me too!
can you tell how much you gained?
power or regular tracks?

 

These are not power seats.
I think I gained about two inches.
I have taken some pics but haven't been able to add them to this reply.
Does anyone know how to insert pics?

Send me an e-mail.
I'll send pics.
kerber492@msn.com

 

Notice how close the seat is to the floor. Seat slides fine, no problem moving back and forth.
The flash really shows the rust on that one bracket. Nice! I can't see that in the dark under the seat. Looks like another small project.