So has ANYONE found a difference between the VTX version of the D2 (product number D2430K) with a part number 446213-001X and the M2 version of the D2 (also product number D2430K) with a part number 5032754X?

I'm a cinema guy so my experience with the D2 is zero though at a friend's recommendation, I've begun a DYI M2 project (with matching SUB 18ish subs). I am a JBL certified reconer so I have access to parts and I can tell you that the 446213-001X is MUCH easier to lay one's hands on than the 5032754X. But the price is also MUCH higher.

The diaphragm kit, D32D2430K is very much available (in-stock in the USA, as of this writing) and reasonably priced, for what it/they is/are. I haven't changed one so don't ask what is involved (I've yet to have the driver in my hand).

Has anyone measured or worked with both? Are they just two different part numbers for the same piece? Is the M2 version somehow different?

-Steve