Isuzu is offering two models of its new i-Series truck. The i-280 comes as a 2WD extended cab and is powered by an inline four-cylinder engine producing 175 horsepower. A five-speed manual transmission is standard and a four-speed automatic transmission is optional. The i-350 is a 4WD crew cab offering a 3.5-liter, 220-horsepower inline five-cylinder motor mated to an automatic transmission. The 2006 Isuzu i-Series is essentially a clone of the Chevrolet Colorado and GMC Yukon.