Question about 1970 Chevelle Cowl Tags..

Kevin,

Just went out and looked at the car..The Fisher body number is a B 6354xx number so I'm not sure how that works as far as the "1" denoting a series production..The "data processing numbers" are 0111 (B D 0111) so not sure if it relates to that or not..What are yours? I have often wondered how the factory tracked cars that were on the line, and what method they used to keep track of cars with new RPO's (whether tracking for quality or assembly procedure)..Any thought?

Greg