have a listen

Maybe a sign that the vac adv can is bad or the advance plate in the dizzy is stuck of frozen up? With that said that wouldn't affect your idling issues, would be more of a drivability thing. I was just hoping to pull some more timing in to see if it liked it.
Does it look like a stock dist. that just had a Pertronix conversion done to it? Wondering how many miles might be on it.

I honestly couldn't tell you the difference. I'm use to seeing an MSD pro billet or just a coil pack. Lol