Ecu and ballast resistor questions

On my 1974 duster 360, i recently upgraded to a HEI distributor as well as installed an American autowire wiring harness. Its been great, i love the new harness, however it lacks information about a ballast resistor and ECU. The distributor is a 2 wire, (battery and tach). Like i said, there's nothing to indicate a need for the ECU on the diagrams AAW provides but im just not sure. Im not too good at wiring, this might be a rather simple question for some of you. Do i just forget about it or do i need to splice the ECU in somewhere? And what about the ballast resistor? Id prefer to bypass as much as i can if possible. im hoping to clean things up a bit for a few shows and competitions. Any help and advice is much appreciated