The XJ Cherokee is a prime candidate for suspension modifications. Con-quering the Jeep Speed Challenge and traversing the world's most rugged trails has earned the XJ prominence among four-wheelers.

The leaf-sprung 4x4 Super Duty has gone from “new and exclusive” to “secondhand and affordable.” Thanks to a rugged chassis and engines that the aftermarket has figured out how to keep alive, a ’99-to ...

For the time being, the most off-road Silverado is the Trail Boss while the Sierra equivalent is known as the AT4. Superlift Suspension can do better than General Motors, though, with the help of a ...