Rockwell Collins SM-80 or SM-280 Microphone

[SM6OID]

Hi!

I have a HF-80 system that just has been put on the air, only CW since I do not have a microphone.
So, I'm looking for a SM-80, SM81 or SM-280 Rockwell Collins microphone.
Other parts may be of interest, such as airfilter for 8020 and the control cable to HF-8040 antenna coupler or possibly only the connectors. Or other parts...?

My HF-80 comprises HF-8020, HF-8030, HF-8010A, on the shelf I've got a HF-8090 and HF-8040.

HF-80 owners, let me know that you excists!