Change from 4-speed to 3w/OD

I used to re-build those RoadRangers for a living. And others too. Prettyeasychit actually. That mightabin the very early 80s, about the time the 15 speeds started showing up. Wait, I remember. It was when the Mack trucks came out with RoadRangers rated at around 1200ftlbs, IIRC.
I really enjoyed that kindof work.