Across the front? The best I can tell without tearing it apart is that there are 8 plastic rivits along the back with two bolts in the back towards the center and the two bolts (one on each side) in front of the tires. The only thing holding it on toward the front is the adhesive.
It sure looks like they installed it without removing the front facia. I found a previous post from CamaroScotty that says there should be 16 rivits. I guess I need to watch them take this one off and then watch them put the new one on when they get it.