Air conditioning interchange

I have a 67 Dart Gt that had factory air and "mostly" complete set up. I also have a 71 Demon 340 that had air as well but is long gone. I am just wondering if anyone knows if the 67 stuff would be correct for the Demon? I am leaning towards a more oem restoration on the Demon. The Dart will get an aftermarket air set up in the future. Thoughts?