06-56 I-model tractors could be a Standard or a Wheatland model. the Standard could be equip a variety of ways, basically any configuration of add-ons. A true Wheatland 06-56 are actually kind of hard to find. They were PTO delete, T/A delete, Hitch delete, would not have the adjustable front axle option and would not have big tires. would be 18.4-34's or 18.4-38's. wheatlands had few options, could have single or dual had. outlets, could be equip with duals, could have the rear platform extension and or equip. with a cab.