I believe a 1 ton would be very rare--most were 1/2 ton(with a wheelbase of about 112 inches) or 1 1/2 ton (mostly with dual rear wheels. 1/2 tons have either 15 or 16 inch wheels, 1 1/2 tons had 19 inch wheels IIRC. Check the Hemmings website, they had a one ton 1936 truck that might give you a hint.
Glenn