Gears, gears, gears! There is nothing like shifting gears in a Classic Truck. It is especially true when it comes to modern drivelines and components that are buttery smooth from one gear to the next.

It's not a long-forgotten factory racing secret. The quickest way to move a '60s muscle car down a dragstrip faster is to equip it with a swift-shifting, close-ratio four-speed and a set of deep ...