The 2009 IC RE series school bus, built on the International 3000 chassis, features a MaxxForce DT engine, Allison transmission, and air brakes, with dimensions including an exterior length of 38 feet and an interior width of 7 feet 6 inches. Here's a more detailed breakdown of the 2009 IC RE specifications: Engine and Powertrain: Engine: MaxxForce DT 7.6L Turbo Diesel Engine. Transmission: Allison. Brakes: Air Brakes. Fuel Type: Diesel. Dimensions: Exterior Length: 38 feet. Interior Length (Driver Seat to Back Wall): 28 feet. Interior Width: 7 feet 6 inches. Interior Height: 6 feet 5 inches. Other Notable Features: GVWR: 34,220 lbs. Seating: 72-90 passengers. Design: Built on the International 3000 chassis. Headlights: Featured the same headlights as those used on the second generation International S-Series. Driver's Seat: Moved forward, outboard, and upward for better visibility. 2009 Specifics: Headlights received black bezels, and the area between them received more detailing.