On an e-Body, the VIN is stamped on the drivers side of the radiator support, and the drivers side of the cowl near the screens.
VIN will appear on the fendertag, and the drivers side door "safety compliance" decal, along with the VIN plate on the drivers side dash. The last 8 digits of the VIN will be on the engine block and trans if the car is matching #'s.
As far as repo braodcast sheets, thats a real gray area. That sort of thing can lead to the possibility of people adding all sorts of options to their cars. I'm not inferring thats what you are doing, but that is one of the problems having a build sheet made up. A lot of options dont appear on the fender tag, so unless you can verify the car came originally with that particular option, there is no way to be certain. As far as an archives, none exists to tell you what options your car was built with.