I need some real user feed back on the Grizzly Locker. It looks exactly the same as a Detroit Locker, and my supplier says Detroit doesn't make one for the 11. 5 AAM axle. My factory posi is junk, just last Friday I got stuck in the back lot of my shop with the left front and right rear spinning, tried using the brake to engage it to no avail. Not a happy person that day. Thanks guys.