I went through the Pertronix fiasco about two years ago trying to buy one for my 69 340 Prestolite dual point distributor. First one did not fit so next I called their tech line and they gave me the "correct" model number for my application. I ordered that model that they advised me to and low and behold that one also did not fit. I called them back and they said that I will need to modify it some to make it fit. I told them "no way" so I ended up returning that one also.
Since then I have been still running the factory dual points.
A friend last year bought the model 1385LS and installed it in a 68 Prestolite dual point and it worked great for him. That model comes with a breaker plate with the ignitor already attached to it. The two models that I tried required you to mount the ignitor to the factory breaker plate. In both cases the mounting holes in the ignitor did not align up with the threaded holes in the factory breaker plate.
