14. With the housing mods out of the way, we could turn our attention to the business end of the axle: the gears and locker. For the gears, we turned to Motive Gear for a standard-rotation 4.88 ring-and-pinion, as well as one of its master rebuild kits. Motive is well known for producing quality gearsets, and this one proved to be no different. For the locker, we chose a Detroit Locker to match the front axle. The author prefers Detroits for their strength and simplicity. They’re not quite as smooth on the street as an open differential, but they’re fairly bulletproof and you won’t ever forget to turn one on when you hit an obstacle.