1969 Dart GTS 440 M code documentation

Hi!

To get my Dart licensed here in Norway I need factory documentation that 1969 Darts were available with the 440 engine.
As the M code option was a mid year introduction it is not mentioned in any sales literature, ads or service manuals.
The GTS 440 cars could be ordered through any dealer so there must at least have been a memo going out to the dealers informing them about the option being available.
The fact that they have a specific letter for the engine in the VIN and 440 Four Barrel badges on the hood is of course proof in itself but I need factory documentation from Dodge mentioning the availability of the 440. They wouldn't sell many if no one knew of them..
Does anyone here have or know of anything like that?

Mcode.jpg