SleeperEngine: MP8 445HPTrans: mDrive 12 spd w/ODFront Axle: 13, 200lbs.Rear Axle: Meritor 40, 000lbs.Rear Susp.: MAXLITE 40 EZ 40kWheelbase: 233" Specifications VIN/Serial 1M1AN4GY9MM020755 Engine Mack MP8 445HP 6 Cyl Engine Size 13 Fuel Diesel, 2 Tank, 234 Gal Transmission Mack mDrive TMD12AFO 12 Spd Axles 13, 200 F, 40, 000 R Air 233" Wheelbase Rear Meritor 3.08 Exhaust Single GVW Type Heavy