Do you have access to an 3d printer?
https://www.thingiverse.com/thing:36550
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With some edit it could fit. For the microphone replacement, you could use any clip on microphone. Double check that it has an mute button.
If you need better sound quality, i would prefer Antlions ModMics. Wireless and you can use them on future headsets too.
On the void pro ear piece, you have an mute_LED, mic - and + and ground for the microphone.
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