Abstract: A rear universally supported gang plow mounting attachment is operatively connected to a forward horizontal transverse main header beam by a front to rear extending diagonal beam having its forward end pivotally anchored to one end of the header beam for angular displacement about a vertical axis, the gang plow mounting attachment being universally coupled to the rear end of the diagonal beam. An adjustable length longitudinal beam is pivotally attached at its forward end to the other end portion of the main transverse header beam and pivotally anchored at its rear end to the diagonal beam centrally intermediate the opposite ends thereof by structure operative to adjustably shift the axis of relative angular displacement of the diagonal beam and longitudinal beam longitudinally of the diagonal beam. The main header beam is further inclusive of structure for pivotally anchoring the mounting beam of a forward gang plow thereto for angular displacement about an axis generally paralleling the header beam.