There are no bolts to hold the grille. 4 screws hold the headlight rims . The grille sets into the lower grille support which is held in place to the fenders by four 1/4 20 bolts and to the hood latch support by two more
The hood latch support is held to the lower radiator support by 2 more 1/4 20 bolts. Then there is the upper grille support Held to the fenders by two 1/4 20 bolts and to the hood latch by two 1/4 20 bolts. That is 12 1/4 20 bolts with built on washers .
The grille sets in the lower grille support on 5 plastic support stands and clipped to the top by 4 plastic push clips. The upper grille support is installed after the grille is installed and slips under the grille
Here are some pictures.