Yeah, that'd be a cake walk!  .......if everything fits inside the small housing(s) It looks like a few had trouble finding caps that would fit on the 603.
Is there a "Tone Stack" calculator for mics out there.....kind of like the one for tube amps?
There is SO much you can do by changing out caps and resistors in a tube amp it's no funny.......I would imagine the same would be true for a mic (yes / no)
What would be the voltage requirments for those caps(?) Some one referred to 50V, but I think they were guessing..