Yeah,..... but what are you looking at doing next!? :D
IMHO if you only need to pay an extra $50-$100 to get an ECU with ignition control you'd be silly not to. It would make a bit difference in tuning scope.
All you need for an ignition trigger to the ECU is an external ignitor electronic dizzy. That then gives a pulse to the ECU, which it can advance or retard, and then send a "fire" pulse to the coil via an ignitor.