wait...do you mean NP435, not SM435? The NP (New Process) transmission was apparently optional on our trucks. I believe boardmember VTKidder has one in his truck. This is what other truck makers of the time used, as I think (dont hold me to this) that it has a granny low like the SM465.
Also, I would like to know what SM stands for. Saginaw-Muncie
