1. Agree
2. Don't understand this one. If a supplier has problems with producing/shipping a particular part, the date codes should be even closer to the build date of the car. I think if the supplier had delivery problems Chrysler ordered larger quantities to reduce the problems on the assembly line. Due to that date on suppliers stuff was older.
3. Haven't done any homework on the supply base to L.A. assembly, so I can't confirm or refute. I have a list of the material that was provided by suppliers in the state of California. And it is more then I thought of!
4. Back in the day, this was a FAR more common occurrence that you would imagine. At Windsor Assembly, there is a huge holding area in the front of the plant that is visible to anyone walking/driving past the plant. To those who didn't know better, it was just the plant displaying new cars prior to shipment. In reality it was their outdoor repair yard. Not uncommon to see it absolutely full to the brim.