THIS IS A 2004 CHEVY 2500 6.6 DURAMAX, WITH THE ALLISON TRANSMISSION. IT IS A GREAT RUNNING TRUCK IT DOES HAVE A COUPLE OF SCRATCHES AND SOME MINOR DINGS, THE INSIDE IS PRETTY CLEAN AS WELL WITH NO STAINS OR RIPS. PLEASE CALL COLBY OR BRIAN ALSO VISIT OUR WEBSITE THANKS AND HAVE A GREAT DAY!