I have a Truckstell installed in my 1945 GMC. It combines with the 3.55 Ring and pinion for quite a nice highway ride. I can pass most anything-including gas stations!
As far as I know, all Truckstells are designed for use with column shifted vehicles. Mine is a floor shift and does not use the extraneous controls shown in the Truckstell manuals.
I also happen to have a spare one. In case anyone was thinking of PM-ing me--I paid dearly for it.
