I've owned 2 turbo wagons, and both had the pushbutton 5 speed, which makes me wonder, how common is the d/r with the 3.7:1 ratio?

there were two models of dual range turbo trannys avalible. First off was the part time dual range 5-speed that came in the '85 and '86 RXs and some of the '85 and '86 GL-10 wagons/sedans. I know of one '85 GL-10 turbosedan from back home that had the tranny and I had a '85 GL-10 turbosedan parts car that had the tranny as well. The other dual range turbo tranny was the Full Time RX tranny. Came with either a "4 high" or a "4 low" but then you had the center diff lock switch to lock it front to rear 50/50.