The grille was the first thing I put on my SS/SC... did that before I even had the first 1000 miles on the car.

I don't know why the SC didn't have a grille insert... it's absolutely essential to keep debris and dirt off of the aftercooler.

One rock or small animal is all it will take... kiss your radiator goodbye... overheat the engine... all downhill from there.

Believe me... I've had friends get taken out that way.

As far as the front bumper moving... it's just plastic... there isn't really anything behind it except for the impact bar in the middle... it moves all over the place.