Getting front end tore down and ready for Firewall, tourqe boxes, and all new frail rails to be replaced and ready for the Mustang II front end. The square tubing frame jig is something I built that bolts onto the door frame brackets that Vertically supports the front end from the outside of the door frame posts. A secondary bar bolts on fromt the bottom that makes a solid square frame around the car with 3/4 bolts on the bottom of legs and allows adjusting or leveling on each side of car for frame rail replacement.