Roger,

Bob Ritchey (Smart-Fly) and I are in production of a spark unit right now also. We started working on it when I posted the idea here on RCU a couple months back (I know others have used it too). Admittedly, introducing 20,000+ volts in to the sytem requires much caution and care. It is certainly not as easy as putting in a spark plug and electronic ignition unit (like I thought it would be).

Good luck!

Chad