Advice: Boom Mic or alternative

Hello all,

I wonder if anyone can advise on a suitable source (prefferably
europe)and / or specifications for a replacement boom microphone for a
Dittel FSG 50 VHF radio.
The current one is bust and I can replace the mic only, or (ideally)
the whole flexible boom with something more petite and lightweight.

A gliding friend has suggested that with advances in technology it
might be possible to install a special mic on the instrument panel,
that cuts out surrounding noise and is only sensitive towards the
pilots head.
Has anyone attempted this ? Results ?

thanks for the attention

Vassilis Mazis
Greece