HEI conversion question

@67Dart273, Many thanks - this is what I needed. I do not have any MSD on the truck.

Is there any polarity going to the distributor? That's the mystery on the truck. The I have two loose wires for the distributor (no factory connector) but the distributor is gone. I'm guessing since the distributor is basically a switch, it shouldn't make any difference but I thought I'd double check before repairing and re-installing the wiring.