Cummins isx 632k on clock 550 hp with t new clutch new Radiator new transmission 18 speed 3.73 ratio new batteries new tires also has an apu runs excellent Absolutely, ready to go to work No emissions zero blowby 46k rears located near shelby Montana We've owned this truck 4 years We have reason to believe that the engine was rebuilt. Just before we got ithere is no sign of weakness whatsoever Call for more information This truck should not need anything. Just too much truck for what we do.