All of the chrome grille trim, except the "A" emblem, has broken off my grille. It appears that these silver pieces are just held onto the grille with clips, but I've read in several places that I have to install a whole new grill to replace them. I see just the chrome pieces themselves for sale at various parts sites. Am I able just to buy these pieces and clip them on, or is it truly necessary to replace the whole grille? Thank you.