Cummins X15 (525 HP), Engine Brake, Eaton Fuller RTLO-18913A 13-Speed Manual Transmission, Dana Spicer DDH40 38,000# Dual Drive Rear Axles (3.70 Ratio), Double Lockers, Peterbilt Air Leaf Suspension, 12,500# Steer Axle, 11R22.5 Tires on All Aluminum wheels, 70-Gallon L/H Frame Mounted Aluminum Fuel Tank w/ Steps, 90-Gallon R/H Frame Mounted Aluminum Fuel Tank w/ Steps, Air Slide 5th Wheel, Merrit Aluminum Headboard w/ Tool Box, Protech L/H Frame Mounted Toolbox w/ Steps, Stainless 1/4 Fenders, R/H Frame Mounted Chain Hanger, Chrome Front Bumper, Dual Upright Exhaust (L/H Dummy Exhaust), Dual Air Ride Seats, Cruise Control, Power Locks & Windows, Air Conditioning, Concert Class Am/FM Radio w/ CD Player.....