I was sold on 4 speeds only until one day, my buddy, DanDumas, stopped over with (at that time) his recently acquired R3 Avanti with a power shift. It had a bad supercharger since the day he bought it. I sold him a nos Paxton for $75 and we put it on the car and went for a test drive. We left my dad’s drive turning left then left again onto Pfiefer Rd. Dan pulled it down to first gear and put the pedal to the floor. The Avanti pulled very hard and when he upshifted to second the rpm’s went wild. I thought he had blown the transmission and so did Dan. Dan let off the throttle an the Avanti and it regained traction. We both realized the second gear shift was so fast and hard that we were actually smoking the tires in second gear. From that time until today I’ve had a special respect for the ps Avanti transmission..