When it comes to upgrading the rear suspension on a classic truck, there are number of options to be had, ranging from the mild (new springs and shocks) to the wild (independent rear suspension).

When it comes to upgrading the rear suspension on a classic truck, there are number of options to be had, ranging from the mild (new springs and shocks) to the wild (independent rear suspension).

Editor's note: An earlier version of this story incorrectly said Ram pioneered coil spring rear suspension on full-size pickups. Chevrolet C10 pickups carried the technology in the 1960s. Ford's ...