A lot of seats are supposed to swap right in. Basically anything from GM 80s to 90s should work. I've seen a lot of Fiero and Cavalier seats swapped in. I would suspect the Camaro/Firebird would work, but I can't say for sure. I'm planning to try and hit a junk yard with a tape measure and see if I can find something next month. I want to try measuring some of the smaller Japanese cars to see if I get lucky. Around here all the older GM stuff is ruff.

I've heard that visors from a Kia SUV might work. Haven't looked into those yet but I'm hoping to get to a yard soon to look.