The medium-duty Chevrolet Low Cab Forward is available in 3500 & 4500, 4500 HD & 4500 XD, and 5500 HD and 5550 XD all available in either Regular or Crew Cab configurations. The 3500 & 4500 models are powered by the 6.0L gasoline V-8 engine. Also available is the 6500 XD featuring a 25,950-pound GVWR and powered by a 5.2L turbodiesel four-cylinder engine. A choice of eight wheelbases and body lengths up to 30 feet are available on the 6500 XD. 

Photo: Isuzu