I think I found my build sheet(70GS455) folded up and stuck in the side of the dash under the driver side A pillar. I have not unfolded it, it is hard and brittle. Lots of overspray on it. I grabbed it thinking it was sandpaper...
That's not the build sheet... I have one too. It is a Fischer Body Sheet used at Fischer to complete the parts of the car that they were responsible for, then shipped the rest to Buick Final Assembly. They do tell you some of the options thought... :TU: