I ran across a copy of the 1978 MVMA Specification form for the '78 Firebird line up. If anyone knows a quick way to scan and post I will, or I can copy and mail out if you want one. Dad's brother bought a bunch of paper work out of dealer back in the early '80s, some reason they kept the MVMA's for all the '78 lineup.
If you don't know what a MVMA is, it's the specifications of everything on the car.
This is one is for the '77 Firebird I found online,
https://auctions-media.hemmings.com/...EBIRD-MVMA.pdf
Joe