The 2015 Ram 1500 is a full-size pickup available in multiple body styles. The regular cab generally seats three and is available with either a 6-foot, 4-inch or 8-foot cargo bed. The extended cab can seat up to six and comes only with the 6-foot-4 bed. The crew cab increases rear-seat legroom and is available with either a 5-foot-7 or 6-foot-4 bed. There are six main trim levels: Tradesman, Express, HFE, SLT, Sport and Laramie. The Laramie reverts to the gasoline V6 by default, chrome exterior trim, clear headlight lenses and the front bench seat, but it otherwise includes most of the Sport's upgrades, adding chrome-accented 20-inch wheels, two-tone paint, leather upholstery, ventilated leather-trimmed front seats (vinyl rear seats), driver memory functions, a power passenger seat and a 10-speaker surround-sound audio system. The Big Horn (Lone Star for Texan buyers) and the off-road-oriented Outdoorsman (includes the full center console and 7-inch driver information display plus a larger fuel tank, fender flares, underbody skid plates, tow hooks, all-terrain tires and a limited-slip rear differential).