I want all 4 wheels to spin in 4 wheel drive. I was told I need a conversion kit for lock outs. Is this true and who sells them?

 

You need lockers, not lock-outs. I do not know who is making them for our axles. I think maybe ARB is but not sure.

 

You need lockers or limited slip differentials in order to have all wheels turning. For the front axle there is the AAM Powerwagon locker, the ARB locker, the Eaton E-Locker, and the Detriot Truetrac.

For the rear axle there is the Yukon Grizzly locker, the AAM TracRite, and the Detroit Truetrac.