Have to agree with your comment re the Peltors.
I ended up buying a BoseX with a High impedance mike for use in Squirrels and an old DauphinC, and had another low impedance mike and power lead made up that works in my usual Dauphin N2.
If you find that you have a common system between the two types you will be in luck!!!
If not, then you may have problems with a Peltor - I don't think the mics are that easy to change - The Bose is a two minute job to undo two screws and swap the complete assembly - plus you get ANR !!!
Cheers