Replaced the original CLS55 AMG 3 louvre grille with a single louvre Mercedes SL65 AMG type of grille. I didn’t expect the grille to make such a difference in looks. Very happy with the outcome!

The stock 3 louvre CLS55 grille (it also had a hole)
The 1 louvre SL65 AMG type grille, looks way more modern and ties in better with the lower grille