I don't have the answer to your question but I used to own a 68 W300 Power Wagon, PTO warn winch, lock out hubs, Dana 70 differentials, 4 spd, 2 speed transfer case and a granny gear. I wish I still had it!!
I managed to get some 1200 X 20 semi tires on it, this was back in 1977. I drew out some blue prints and had a machine shop make custom rims for the semi tires. No lift kit and no cutting of the fenders, that truck was born MEAN!! I also installed 6:13 gears to go with the super big tires.
Treblig
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