I'm assuming that the "Btownie" is actually a Brownie? "T" & "R" do reside right next to each other on the QWERTY keyboard!

My only experience with the Brownie gear splitter was on 275 and 400 HP International semi-tractors and there were actually four speeds on those: "underdrive", "drive" and "overdrive" for routine driving and an "under under drive" that could be handy for really slow maneuvering in a crowded yard. But that gear's real value was in recovering from a missed double clutch when upshifting the 5-speed main tranny. The Brownie could be shifted so effortlessly and quickly that even when pulling a significant grade the "under under drive" could still be engaged at an engine speed within the useable torque range; then up through the Brownie gears again to a successful double clutch on the 5-speed main tranny. Did Brownie make a model sized suitably for the gutless little 1 to 2 ton Big Bolts? I'd LOVE to have something like that on my '52 Big Bolt dump truck!

Currently, my only Stovebolt is a 1952 Chevy dump truck. My non-Bolt trucks include two 21st Century Chevy S-10s, an '02 extended cab ZR2 and an '04 crewcab LS both of which are four wheel drive. I also have a 1956 Chevy 3100 that is currently undergoing a frame off restoration, Resto-Mod style. My non-GM trucks are a 1941 International K-7 5 ton dump which was custom converted to all-wheel drive and a 1996 Ford Powerstroke 4x4. I haven't owned an automobile for a number of years now. If the opportunity should present itself I'd definitely like to acquire more true Stovebolt trucks, and even cars ... one can never have too many.