Produced in small quantities, a total of 729 H1 Alphas were built, 417 of which were wagons. This 2006 Hummer H1 Alpha wagon model is powered by the factory Duramax 6600 6.6-liter 32 valve turbodiesel engine making 300hp and 520 ft/lbs of torque paired with an Allison 1000 5-speed automatic transmission. The Alpha has special features, such as inboard brakes and portal gears that allow the drivetrain's half shafts a higher placement for greater ground clearance. The radiator is up high, sloping over the engine on a forward-hinged hood, and the air intake is a high-mount snorkel. The Alpha boasts 16 inches of ground clearance and aggressive approach and departure angles, enabling it to climb a 22-inch-high obstacle, handle a 60% grade, and wade through 30 inches of water. The factory black exterior features a winch kit, front brush guard, three front-facing LED light bars, two rear-facing LED lights and a full roof rack with a ladder. There's also a rear-facing camera, satellite dish and tow hitch. The two-tone brown-and-black factory leather interior is equipped with four LCD screens.