Tim,
My deck lid is a 70-71 which had these cutouts from the factory. If you have a later style deck lid you will have to cut these out yourself. The T bolt will lock into the spoiler and then you will have to drill holes in the deck lid for the bolt to go through and the cone shaped nut will secure it to the deck lid. Just as Barrys picture shows the clips are for the outside screws that go through the deck lid and into the clip that is mount on the spoiler. Good Luck