Part of the problem here is that reality is sometimes ignored by the "experts" and their opinion becomes protocol for Industry possibilities. I've seen many times where an "expert" thinks that their years of research justifies them filling in the blanks and their limited knowledge about a topic becomes the new reality. I know of 2 documented St. Louis cars where their Engines were replaced AFTER the final Inspection had taken place. Apparently, the Worker who transported them to the holding area for shipping, got a little rambunctious and decided to have some fun along the way. They blew the Engine up and a replacement block was installed before the vehicle ever made it to the Dealership. I have also documented a vehicle where a quarter glass was dated 2 months after the VIN label date, the Fender Tag and other dated components on the vehicle. The Original Owner remembered that the quarter glass was broken at the Factory and it sat for 6 weeks while waiting for a replacement piece. Who knows why it took so long to get a replacement piece. One would think that they would have pirated one from the Assembly Line inventory but they obviously did not.

I also know of scenarios where cars were built, driven to an Inventory Lot, the carburetors were removed from those Inventoried vehicles, taken back into the Plant and used to complete the cars coming down the Assembly Line. None of these scenarios were written into the Engineering dialog but were realities that occurred to facilitate real World production. It's doesn't follow the rule but they are documented exceptions. The "experts" don't like for the average guy to discover these facts because it doesn't favor their perceived reputation. If they discovered or researched these odd scenarios, they would be screaming them from the roof tops to bolster their status in the documentation World. The fact is, there are exceptions to the rule and deviations from Factory protocol that are being discovered everyday. History doesn't change, only our awareness of it.