Agree, there would not have been a single day or week for the switchover. But it would be nice if we could pin down the (approximate) month when the new features were introduced. It may well have happened gradually. It must tie in with the contracts the governments placed for these vehicles, the manufacturers would establish the configuration for each contract and send out orders to their subcontractors - that is typically the moment for changeovers.
Mind you, they may well have kept a stock of “early” or “mid” production parts as spares for the trucks already out there, and started using the “late” parts. That is why we still find NOS early and mid production parts.
For Jeeps and other HMVs people have pinned down the introduction or changeover of every little detail. Why haven’t we done this for CMPs?
