Kind of disappointed recently, my previous truck was air shift and my new truck has the lever for air shift under the dash. I never tried using the 6 wheel drive and when I went to lock it in i2t started dumping air under the truck. Found out they must have taken out air shift transfer case and replaced with sprag. Now first thing my front wheels wouldn't kick in when the rears were slipping so I read TM's and it is extremly easy to adjust just need a jack, 3/4" wrench and I think 7/16" or 5/16" wrench. However, I adjusted it each way and could only get front wheels to turn when spinning in reverse gears. Nothing in forward gears (air shift coming soon). Now the second thing. Do Not drift with the clutch in while truck is in reverse. Happened to me quite a few times before I realized what was happening but basically transfer case is binding up between forward and reverse gears. I thought something was wrong with my brakes because of the loud popping sound after i drifted forward with clutch in and shifter in reverse. If your sprag is good and adjusted properly which is easy to do, it should work fine if not or later down the road install air shift.