I think that the letter M indicates the calendar year the car was made in?
My car is the same thing, M. M is for 1972.
If it was 1973, it would be N.
1974 must be O unless it is not used because of the confusion between the number zero and the letter O?
A European delivery car would not necessarily have all of the US required equipment. Just what was needed for the country that the car was going to be delivered and registered in?
My car has the a/c relays, buzzers, flashers, located inside of the trap door on the drivers foot box BUT has the bracket installed in the passenger footbox that was used to install the same items used in the pre-L cars.
So there are running updates in them from earliest to latest.
I'm not sure if all of the change over points are registered or registered accurately?
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