In my original post I made the statment <span style="color: #FF6666">"The BDY# in 69"</span> and we were talking about Camaros built at NOR. I have no clue what they did at other plants and years, it wasn't consistant.
Read below, taken from CGR, some of which Steve already mentioned.
1969 Fisher Body Numbers
1969 NOR Cowl Tag
Factory documentation indicates that the <span style="color: #FF6666">1969 system</span> used the central office order confirmation number as the body number and the analysis of vehicle data and documentation confirms this. This is the same number sent to the dealer as the order confirmation, used on body broadcast sheets in the IDENT number field, and that appears on the Window Sticker/Shipper. These numbers were unique for both Norwood (NOR) and Van Nuys (LOS or VN) in 1969 since they were assigned to the plants from a common pool of numbers (for example, 295460 was built at NOR (see the 69 tag picture) and 295461 may have been built at VN).
Orders were not built sequentially, but were scheduled by the assembly plant dependent on build component availability. <span style="color: #FF6666">Orders could be held for several weeks until the required components were available, e.g. 295460 may have been held for a several weeks due to a supply </span><span style="color: #FF6666">issue</span>, where as 295461 may have been added to the build schedule right away. This makes the 1969 body numbers vary relative to the VIN numbers.
Due to the extended 1969 model year, the body numbers were reset in August 1969 to 100000 at Norwood (Van Nuys has ceased Camaro production by that point).
Here is a good explanation of the 67 68 and 69 Camaro BDY#'s. Note that NOR and LOS only shared the same BDY# system in 1969
http://www.camaros.org/bodynumbering.shtml#69