Lean burn distributor and vacuum advance distributor questions

I'm in the process of a Fitech EFI install, and I'm thinking about what to do with the ignition system. Currently, the 5A has a standard Mopar electronic 2-wire distributor, Mopar electronic ignition box, ballast resistor, and standard canister coil. It works, sort of. I had been planning to keep this at least through the testing and tuning phase with the Fitech.

However, the Fitech ECU also includes the ability to run timing by controlling the ground side of the coil. The way this works...

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Author: Ark