@ BigRig. Who is GSC? I see the reason for an Air Locker, you get to choose when the wheels are locked...But as for many, the costs are ridiculous for the average joe like me. I am very temped to just get an Auto Locker because of the price but I don't really want the heaving steering that comes with have the front locked all the time. But easier to instal than a E or Air locker....