Father-Son 1974 Duster Project

So I was thinking about using an ABS headliner, but now I'm reconsidering. My car came with 4 headliner bows mixed in with a ton of other parts just thrown in the trunk. My buddy Al had a look and wondered what the bows attach to in the car. He said it wasn't at all like his 69 Dart GTS. I'm going to to look in manuals I have for 63 body and chassis manuals to see if I can sort it out. If anyone can enlighten me with a few pictures I'd appreciate it!