Like Bmxer524 said you just have to cut the three tabs holding that square grill in. I had to do this on my 2010 to get the hooks installed. Once you cut it out you can fish the hook in through the front and bolt it down. If you look it is connected on the left and right side as well as the bottom. Just cut those tabs with a knife and your ready for the tow hook. No need to remove the bumper or the insert.
2010 KK, 2" Daystar lift, 245/75/16 BFG All-Terrains, interior LED's, front rear and cargo liner weather tech's, Pioneer AVH-p4400BT, GEX-P920XM, Kicker 6" in front 5 1/4" in rear, PB 2.75" in dash, Kicker 300.1 amp, Pioneer TS-SWX310, JK light bar with Hella 500 ff and 100w bulb, BOYO rear view camera, JBA exhaust, K&N drop in filter and more to come.