I installed my TRENZ Alluminum Billet Grille yesterday with the help of my son. We had one hell of a time doing this. The instructions that came with it were not very clear. I down loaded several other installation instructions from other brands, and kind of winged it from there. Ended up almost taking off the whole front end. The most difficult part was getting the billet grille to fit flush in the recessed portion of the grille opening. It still is not comepletely flush all the way around. I'm hoping that as the weather gets warmer here in Michigan, I can push that one corner a little deeper into the opening. If not, then I will back out the nuts on the studs, and make the grille more of a flush mount than a recess mount. It is a good quality product, and it certainly changes the fron appearance of my 300C. I wanted something different from everyone else that has a Bentley type grille. I mounted the Chrysler Wing emblem on it, and it looks finished. Lots of bitchin' and bruising and bleeding, but well worth the LOOK!