[GTX JOHN]

Nope.........Only A Body Big Blocks were in 1967 to 1969 A Bodys in Dart GTS only
and Barracuda Formula S and also a few 1969 "Cuda 440" non S models.

The 440 M code was factory available in the last month or two of 1969
Plymouth production thru all Plymouth Dealers.

The 69 Dart M code 440s .... I have seen back then were ONLY at Mr. Norms and
Saddleback Dodge in Tustin. They told me back then
that they had to order for stock a quantity of 20 at one time
to acquire them

In 68 I have only seen 440 Darts from Mr. Norms and no other one at all.

In latter part of 1967 Model you could get a 383 Dart GTS and Barracuda S

That is the best my ancient memory tells me from those days I did own
two of the Blue GTSs from Saddleback Dodge.