Installed the Pertronics Ignitor on my '57 283 with a '74 distributor, in my '55.1. Only problem was the holes in the little shim washers were a 1/2 hair too small. I opened them with a drill bit. Easy installation for a novice. Just need to remember to reconnect the vac advance tube (and the vac tube to the tranny that I did not realize I pulled off). All is well in the Great North, it is running smoother than ever.
