the gov lock is a locker that uses centrifugal force and clutches to lock the axle shafts together.It is a factory part and it still finds it way into some of the current vehicles today. It acts just like an open differential but I think when theres a wheel speed diference of like 200 RPMS it will engage. It is nick name the gov bomb because they are notorious for grenading if you do any sort of wheeling. I think its a great idea, there just not very tuff. If you ever have the chance of looking at one outside of a diff. I would, I thought it was kind of interesting myself.