I had one of these installed into the rear axle of my '96 2wd dodge ram and I really liked it. It really helped alot in the traction deficiency dept of a 2wd.

After I added sand for weight & studded snows plus this locker; she was a hoot to drive in the winter! I was passing 4wd's on the way to work when previously I was hold'en them up!

Sometimes I think about putting one of these in the rear of my '07 'stang.