What are some common axle mods for some of us wheelers? Gears, lockers and maybe even an axle swap. If you ever thought of adding these mods but was so confused on what goes on in side there,well don`t worry. One of the people that invented back country adventrues "FOUR WHEELEER" has an excellent issue this mounth on axles and gears. They tackle a gear swap, building the toughest dana 60, and what goes in the designing, building, and testing of ARB air lockers. I would suggest if you have 5 bucks and are at a gas station or a book store. It would be excellent reading on the John or in the garage and it would defently be money well spent.