To take off the Concorde's grille, open the hood, get rid of the fascia, unscrew the two foam screws and remove ten grille clips before you can remove the grille. For the upper grille on the 300 M, open the hood, remove the fascia, use a drill to take out the rivets joining the cross bracket to the grille and then remove six clips that attach the grille to the car. When replacing the 300 M's lower grille, remove the hood, the fascia, detach the two foam screws and remove the eight clips attaching the grille. To put the grille on the Concorde, line it up, anchor ten clips to attach it, put two screws on the foam and insert the fascia, close the hood and look at the alignment. Upgrade your 300 M by sliding the upper grille into position, installing grille clips, riveting the bracket to the grille, securing two screws for the foam, reinstalling the fascia, closing the hood and ensuring the grille is aligned. To install the lower grille of the 300 M, set it into place, fit eight grille clips, screw in two screws for the foam, reattach the fascia and ensure the alignment is right.