My stock distributor was worn out and I ended up getting a new pertronix billet distributor fpr the 440 in my 67..

I liked the idea of a bearing instead of a bushing on the top of the shaft.. Installed with a new pertronix coil, wired up the back of my ballast resistor for 12 volts and its never given me a problem since 08 after its resto...

In 73-74 I had nothing but troubles in my A12 car with its stock dual point and the Accel dual point I purchased for it.. Grant it, I was in High school and it was mostly "operator error back then"...
Did not want to go there again...