GM Build Sheet

I used to own a 1977 Type LT Camaro that sadly, departed this world at the hands of a 3 time convicted drunk driver who blew through a stop sign and decorated my front lawn with not only my '77, but also with the pile of crap pick-up he was driving. After a very long period of attempting to resusitate the car, I ended up salvaging what was left and sending the remaining mess to the big Chevyland in the sky. ( I bought the car used when I was 16 in 1984, from the original owner and it only had 13,000 original miles on it. The story was that the owner bought it as a wedding present for his wife. They both worked for a pharmacutical company and both had company cars. They very rarely drove the Camaro, and after about a year, decided to put it into storage. When I got it, the spare tire and jack were still wrapped in plastic from the factory, and it had about 3 inches of dust on it but it was stored on blocks and with no fuel in it, so, it was in what one could call almost factory condition.)Recently, I decided to sell some of the parts, and I noticed a paper stuck in the springs under the rear seat (I salvaged the 2 buckets and rear seat). I carefully removed the paper, and immediately laminated it, since it wasn't in the best of conditions. This ppaper had about a gazillion codes on it, and after a few phone calls to local GM dealers, I learned that this paper is called a "Factory Build Sheet". Although some of the codes were easily decipered, such as year, model, color, engine, and where it was built, alot of the codes are still a mystery. After talking to a guy at the parts counter at my local Chevy dealer, he told me to bring it in so he can see it. He made a few calls and was able to deciper that my '77 was the 51st Camaro built by GM in that year, it was built at the Van Nuyes plant and that it was ordered with a

305, posi, a turbo 400 tranny, an AM/FM cassette stereo, tinted windows, leather interior, rear window defog, and a custom midnight blue metallic laquer paint job. That still did not deciper about a hundred other codes. Does anyone here know how to read these codes or know of any publication that explains them? I even went as far as calling GM directly and all they said was Good Luck, that those sheets were a thing of the long forgotten past. Any help would be appriciated.