Crenwelge,
You are right, this is a rare truck.
It has the Power Divider Aux Transmission and Corporate GM Single Speed 15K Rears. The power divider is 3-speed (low-low, low and direct), it also has the ability to disengage the rear rear.
Also, the 348 was the only motor available in the 1958/59 Sereies 90 and 100 trucks.
Someone is going to have a neat old truck!
Mike B
