Technically, it’s not your drivetrain, but we’re betting you’re gonna want to steer. The early CJ steering systems were a Rube Goldberg-esque assortment of pivots and levers. The steering boxes, bellcrank, and tie rod ends all wore out. Replacement components are still available and it’s all fairly rebuild-friendly stuff. When used with the stock-height suspension the Ross cam-and-lever steering setup provides pretty good mechanical advantage to turn the wheels off-road.