It has been a bit since I read about the edis. What I remember:
The coil pack will not work for our application. It was designed to
fire two plugs, the second plug being a waste spark which requires
very little energy. In our applications both plugs require primary
plug energy.
I also remember that it is possible to use pairs of other coils (w/
igniters?), requiring a little circuitry to pair the coils.

Blake

I was going to experiment with it but it could
be waste of time. There are differences on what
the two plugs see.

One could also use one coil pack and let
the waste spark go to the other rotor at bottom
dead center. The 2nd gen system worked like
that for the trailing plug. There were actually
3 coils. One waste spark coil for the trailing
plugs.

People tell me that is also not a good idea.
Perhaps the charged chamber with fuel and air
but not fully compressed is  arriving and severe
pre-ignition could occur.

There are a lot of options. We could use the
Chevy coil on plug but the Chevy only fires
half as often for a given RPM. That is why
Tracy had so much problems with them over heating
in the beginning of using them.

Save those 2nd gen coils :)

Perhaps the best are the Mazda RX8 coils.

Paul Lamar