what about a Pertronix conversion for a factory distributor ?
i have done several of these, with the oldest being roughly 12 years old or possibly when they first came out with these kits.
all are on very mild [stock] engines that see no strip duty, but start and run great, even after sitting all winter.
the kits reside inside the distributor with only an extra 12v source wire added for start and run.
the thing i don't know, is how these kits react to high rpm or locked out timing.