I have a 72 dart 4 door that I am parting out. I have all of the headliner bows. The back one is bigger than the rest and it has 3 or 4 wire clips about 6-8 inches long that clip on the back hoop to the rear window frame. This keep the hoop in the right place. I didn't see those in your picture. If that helps. I you are missing any thing I have all the hoops and the wire clips for the back hoop.
