Im going to be putting new door panels and rear quarter panels in my 72 chevelle, i need to know how many clips and gromets each door takes and how many each quater panel takes? any help would be great!

doors take 6 each rear panels 1 each

do i need the plastic grommets that go in the door or do i just need the metal clips

You'll need both the metal clips and the plastic grommets. You will also need new chrome screws for along the bottom