The Stovebolt Site Forums The Shop Area Engine Shop Mallory, Pertronix, Langdon or??

I started this post another generation ago, and I am very thankful for all the posts. But please bear with me, I am a little slow. I HEAR Pertronix has this gizmo that goes inside your stock distributor and is the end all, be all of electronic ignition for vintage vehicles. What is this and is it all its cracked up to be? I was thinking about the bigger picture. Had no idea there was this small kit that was a good thing? (thanks everyone!)