I recently purchased a 02 Chevy 2500 HD D/A. It had the front grille cover with it. I assume this is the factory provided one. There are four snaps at the top of it that should snap to the holes in the shroud that is just under the hood. Question-these four snaps have no where to snap to. The connections on the shroud are just plastic inserts that hold the shroud on. Should there be a piece that I replace these plastic pieces with that will allow me to snap the grille cover to?