I have a 52 3/4 ton that I am going to use as a parts truck. It was upgraded to a 235 at some point and it has the 4 speed on the floor. The thing that surprised me is that it has a open drive line! Didn't the 3600 come with the torque tube as well? If it did then what kind of transmission do I have? The gear shifter looks totally stock and so does the rear end. Maybe I'm crazy but this seems pretty weird to me.