I have had a pertronix on GMC 228 converted to 12v with alternator. It worked fine. I have one on a 59 ford tractor for at least 8-10 years now without an issue. At one time with another tractor restoration I had an issue with one and posted my problems on a website asking for input. I got an email from the owner asking me to call him. When I called I thought I would get some advice or problem solving. But instead he gave me an earful because it was bad advertisement on the internet for his business. I wasn't sure what to think of the company after that.
