Tractor Truck Specifications Model Required: Peterbilt Model 579 Tractor with 44-inch Low Roof Sleeper, Clone of Chassis 747906 These are the minimum specifications for the vehicle described. Where a brand/model is referenced for an option listed below, an equal will be considered. Rear Mudflaps and Coil Hangers Polyarmor Black Quarter Fenders JOST JSK37 Fifth Wheel, Light Weight Top Plate 7.6in – 8-in Fifth Wheel Height with 18" Air Slide Frame Mounted Deckplate and Access Pkg, RH Side PHP10 Iron Preset PLUS Hubs - Front and Rear Bendix Air Cam Front HP Drum Brakes 16.5x5 Gusseted Cam Brackets, Steer Axle - Front and Rear Heavy Duty Cam Bushings, Steer Axle - Front and Rear Anti-Lock Braking System (ABS) 6S6M Omit SmarTire Tire Pressure Monitoring Bendix Air Cam Rear Drum Brakes 16.5x7 with Automatic Slack Adjusters & Outboard Mounted Brake Drums. Ratio 3.36 Rear Axle Peterbilt Low Low Air Leaf 40,000 lb, 52-in Axle Spacing, Light Weight. Dash mounted dump switch with indicator light for suspension. PACCAR MX-13 455 @1600 GV@2200 1650@900 (2024 Emissions) Enable Preferred EIST Settings Enable EIST Ambient Temp Overrule Typical Operating Speed 62 MPH MX Retarder State Cruise Control On (Manual Mode Engine Parameter) Powertrain Optimized for Balance