Coil voltage

Ok, so that is the Lil "brain" with the different pins? I've read about that here... Thank You! I get it now!

Yep, just like this:

20220710_025111.jpg
There is a nice little Aluminum adapter plate that screws to the bottom of the mopar distributors to mount the HEI module to.

It's actually a very nice, simple conversion to do. Then you no longer need the mopar electronic ecu / brain box.