Once again, the body number has NOTHING to do with production scheduling. It was generated when the dealer order was accepted by Central Office.
Fisher Body released orders [generating the tag] as instructed by Chevrolet Production Control. It is a fundamental production control practice to material assure any order before releasing it. There is no way Chevrolet would have instructed Fisher to release COPO orders for production if it did not have the parts to complete them. Those orders would not be released to Fisher until ALL components were available.
The body bank was a queue to arrange them by option content for line balancing-not a place to store orders that could not be built.
There is wide variation in body number relative to VIN-Van Nuys Camaro assembly was on the same system. A typical production week at Norwood was 4,560 cars. The spread from the highest to the lowest body number for any VIN range is commonly many times that number. There were around 7,000 VINs with 04L/05A tags at Norwood but the body number range is over 47,000.
Another production control practice is to never starve the line. Fisher often released more orders than could be built in any given week. That's why some weeks are missing. ZL-1s #3-#39 all have 02D tags but were built the first two weeks of March.
http://www.camaros.org/assemblyprocess.shtml