Edelbrock AirGap question

You realize we're talking about 54 years ago. He was in the electrical union so money was no object. He never told me what he paid and they pretty much only did Chevy's back then. My 68 Road Runner was running great, especially after I beat a 427 full size Chevy, so being in the Service I had no extra money for real tune ups like he got. I also had a 71 Duster 340 Auto and put in the electronic ignition, Direct Connection, back then, from single points, really woke that motor up. 4 years later I was kicking my self for selling it. Still do today.