That's my own private theory about the weights and series numbers and it may be only coincidental that it "almost" fits some of the models. The weight info is in the "resto" pack info. Keith Hardy's
site has lots of them on-line and the one for my 50 3604 pickup list the curb weight at 3695 lb. The 3104 pickup shipping weight is 3175. So....it's close. But I do wonder where did they get the series numbers? I know the Canadian 1/2-tons are 1300 not 3100.
