i have the Spartan lokka in my GQ and while its great to have sometimes i think it would have been better for me personally to have a switchable lokka due to the driving that i do which is mostly sand and some clay/mud, i find that with the LSD rear in the sand you'll go anywhere and most places where there is clay/mud only when the going get tough the lokkka comes into its own and i love it uses heaps of fuel and makes the steering twice as heavy and the turning circle isn't great, but when you need it it will pull me up that hill withouth breaking a sweat and through bog holes like they are puddles (sometimes lol)