One thing to be careful of when installing the grille delete kit....dont overtighten the 4 bolts to the bumper. The screws will actually start to protrude through the plastic piece of the grille delete! I did this and just threw away my $60.
Another thing I didn't like about the grille delete is that if your radiator has some knicks in it (like mine does) it clearly shows them. I ended up going back to my stock grille.
Yes they were there before the grille delete...I can only imagine how much worse it would be with the grille delete kit, there's nothing there to protect the radiator from debris.
Here is a pic of mine with delete kit. Also its only a 10min job to remove front bumper. Forget trying to bend bumper and blah blah this and that. I also had to run to hardware store to buy nylon spacers to get delete kit to fit tight against bumper.