Coil per cylinder is a nice setup! I am not certain how much boost you have to run before needing individual coils. The EDIS system will produce more than enough spark for the boosted 300. I really like the EDIS system for its simplicity and durability. Coils and trigger wheels are easy to find. If you don't want to run the EDIS module, megasquirt can decode the 36-1 trigger wheel and directly drive the coil.