Dan

This clutch will fit you
http://www.autozone.com/autozone/parts/1947-Chevrolet-3600-3-4-ton-P-U/Clutch-Disc/_/N-j7n5hZ6o21u

I have 52 AD 3600, tried all you mentioned and finally this is what worked for me. Don't try any kits for this model they dont have one atleast from what I saw.

Ganesh