1972 Dart Headliner board install.

Well, I ordered a new already covered board from CL. Nice 6-8 week lead time, so that's nice. :)
But I have one last question, do I need those really small metal clips to install the board type headliner? the little metal ones like these: Capture.PNG

I would just like to know so I can order them and not be in limbo again after I already have waited the 6-8 weeks! :) thanks everyone!