6.6 duramax, Allison transmission, 4x4, crew cab, 203,000 miles, new tires, never been wrecked, fully deleted and new cp3 pump, air bags with air pump and controls in cab, air tank for on board air, hazard lighting, auxiliary fuel pump with external fuel filters , 77 gallon bulk fuel tank with fuel pump, electrical charging post installed to rear of utility bed. Super clean truck.