There's another one. What's that's about? Dual point is better at high rpm, right? Maybe they figured only buyers of 4 speeds cars were true enthusiasts??? Heck if had a choice I would have bought a 4 speed. I didn't go for the swap because I was already in over my head!
Dual points are good at low rpm also. With the long dwell, it charges the coil longer for a hotter spark. I wonder how the electronic distributors compare?