Now, we're rolling the car back into the Source Interlink Media tech center to wrap up our suspension upgrades with TCP's rear leaf-spring suspension ... the easiest way to install the TCP torque ...

Leaf spring suspensions use layers of strips known as a leaf pack that are attached to the trailer frame. Air ride suspensions cushion the shock using valves, air lines and air spring bags.

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 ... leaf kit and not necessary for a traditional install.

While the company's Ultra-Cruise frontend equipment is currently limited to '49-53 Fords and Mercurys, its custom coil and leaf springs can ... the rest of the install was essentially a remove ...