Upgrade Ignition help???

That's easier for me to grasp, thank you Dubob. I'm doing this in stages but the end plan is a new wiring harness, fuel injection and upgraded gauges, electronics. So I want to use the car as this is being done but not have to replace parts because I didn't think ahead. HA!!! Good luck with that right! But I'm trying to minimize that and buy the parts that will work with the end game.