2020 Peterbilt 579, Paccar MX13-455HP, 639,346 Miles, 12 Speed Automatic, Single Vertical Exhaust, Wet Line, Dual Alum. Diesel Tanks 200 Gals. Total, Power Steering, Overdrive, Cruise, 2.79 Rear End Ratio, Tandem Axle, Air Ride, Aluminum Wheels, Air Slide 5th Wheel, Single Bunk Sleeper, Dual Power Mirrors, Dual Highback Seats, Air Ride Passenger Seat, Heated Mirrors,