On the Smokestack site there is a old buzz saw rig for sale that has a Mitchell rear end assembly that a friend in AU has identifyed as POST 1917 It has a brass hubcap on it . The seller has plentty of pictures .he came email you. The machine is powered by a early Dodge bros engine. He is willing to bust it up. His ph is 605 261 6203 Its in the mid west.usa