Congratulations for at least attempting this. Unfortunately too often these days the technologies are developed by start-up companys just to be bought out by a larger corporation.
More or less proves:
Tucks First Law of Design: You cannot design anything more technologically advanced than your boss can understand.
and
It's really difficult to get anything accomplished with both hands covering your a$$.
FOR THOSE OF INTEREST on where your spare engines have been going. Check out the Article on the Hummingbird A160T unmanned helicopter on P50 of the Mar31 Aviation Week. Seems the original engine was a six cyl Subaru, hmmmm.........