Anyone know where I might be able to get the build sheet on my St.Louis built '81? I have heard it may be glued to the gas tank, or under the carpet, but not really into taking the tank out to look. Might try taking up the carpet if it is loose. Does anyone know if Chevy or another outlet may be able to provide copies, probably based on the VIN?

 

Welcome to the forum.
You can use an inspection mirror to check for the presence of the build sheet on top of the tank. I don't believe there are any records for the St. Louis built cars tho.