Well I have the 4x guard front skit, and front Differential skid. When I bought the XK the gas tank was leaking, fuel lines were broken, and fuel pump was bad. All of this was replaced on their dime, and until I checked I assumed the gas tank had it since the front dif did. Turns out they must of cut that corner and just replaced the tank, but not the skid too. Frustrating, but I have owned it for long enough, the guy wont even bother to call me back. I crushed the rear corner of the bumper and those sliders would have saved it. I spaned the whole creek side to side while the wranglers just drove through.