I have an Ignitor II on my 216. It's been on the truck a few years now. It's using the Pertronix coil and Pertronix wires. Carter YF 964S carb, AC plugs (don't recall which). Runs great, probably only a couple thousand miles a year, but I drive it hard enough to keep up with Houston area suburban and freeway traffic and Texas highways.

I have actually accidentally left the key on overnight once, a couple years ago. Was exiting the truck and I guess I put a little clockwise twist on the key as I pulled it out of the ignition cylinder from the open passenger door. Next morning I get in to go and realize the slot is not pointing to 12:00 as I put the key in... The battery was drained, but with the assistance of the jump box, it's like nothing ever happened. Still runs great.