Opinion on Electronic ignition for 68 340

FWIW, any Pertronix module is very much like a Mallory Unilte module. They do NOT tolerate dirty power from the alternator and they will not tolerate jump starting with the ignition hooked up. Or one of those big jump boxes. It will kill the module.

As long as you know this, it’s never an issue. Not knowing it how these things fail. Just like the Unilte.