Heater Box Clips

I am helping a friend restore his 67 Mustang with factory AC. I just restored all his boxes, and the clips look just like the ones on the Mopar boxes. I'd bet money that they would work. They are available from any place that sells Mustang parts, and they are cheap. I remember thinking they looked the same when I was working on the Mustang boxes. Unfortunately I can't check for you, because I pulled mine out and sold them when I put in a Classic Auto AC system.