The toro flo is a 1965 GMC 5000 tractor that pulled a single axle dump trailer (that i also have) it has a five speed trans with a two speed rear axle, not sure of the specs on either. Also not sure of the GVW so any help would be appreciated. The 1964 GMC B7000 is an old winch truck, it has a 671 Detroit with a 5 speed main box, 4 speed auxiliary, and a power tower. Both trucks were my great grandpas at one time and have been in the family since he got them.