Lunchbox or drop-in lockers are often overlooked by the off-road rags. Much of the time we know we are going to bigger tires, regearing and so forth, so replacing the entire differential makes sense.

I have a 2001 Ford Explorer Sport two-door. I bought this vehicle 10 years ago to just have a nice SUV that could do some minor four-wheeling, but today it has morphed into a fairly decent off-road ...