Dual point ignition upgrade? in Engine, Transmission, Drive Line, Etc Posted May 15 Hello forum, I had a slight problem with my 71/429cj not long ago. It was pertaining from the Mallory Unilite ignition system. Luckily I have my car running nicely again with a basic Pertronix I system. I still have the original dual point distributor. (Not on the car atm). I have bought a Pertonix 1281DV system specifically for upgrading the original dual points. Are there any advantages over the basic system? Or the original dual points system. The engine sounds absolutely fine and healthy with the basic Pertronix I (non-dual pionts igniter)….. What were the reasons/advantages by having a dual point system originally? We all all know it is a slightly more complicated system requiring a bit more maintainance. thanks.