Although not exactly HB but this might help:
http://www.helihobby.com/html/separate_electronics.html

I see you're down in FL but if you ever happen to be in Brooklyn, a customer of Richie's (owner of Brooklyn Hobbies) had converted his micro-heli (forogot which one) to brushless. Although each model is slightly different but separating the electronics is pretty much the same procedure.

Good luck and let us know how it goes!