One of the most fulfilling parts of driving a car is shifting gears. Enthusiasts like us yearn for open, twisty roads, going through the gears and surfing a wave of torque. Yet, most of us are stuck ...

Cummins is a renowned builder of diesel engines for pickup and semi-trucks, and it's in the latter where you might also find some of its transmissions. While older semi-trucks tended to have manual ...