Going back to Chrysler ignition

I am in the middle of a no start when cold issue on my 64. It was converted over to Mopar electronic. I am leaning towards the starter draw may be excessive enough to draw the battery voltage below the minimum for the ECU. (around 10.5v) I have a few components to try before I go back to points (and may be a Pertronix) or replace the starter. LOL
My first test would be the pertronix if voltage is indeed your problem, plus it's a good back up from what I have seen and experienced. Last time I hooked one up it sure woke up my older brothers 67 Mercury Calenta. 289, looking a hole lot like the 67 Fairlane ( RIP brother Ken)