67 Barracuda Notchback Headliner Hardware

Thanks for replies...
I need to source:

• perforated headliner
• sail panels
• wire spring from rear window to rear bow
• screws for visor and dome light which I think I have.

One question I do have is, the clips that snap into the headliner side trim molding. Do they play a part in the headliner installation. As seen in the picture below.