LOOK AT ME! DETROIT DD15 POWER WITH A DT12 AUTOMATED 12 SPEED TRANSMISSION IN A NICE DOUBLE BUNK TRACTOR. CALL SELECTRUCKS OF OMAHA AT , OR STOP AND SEE US AT I-29 EXIT 49 IN COUNCIL BLUFFS, IOWA. WE ARE HAPPY TO HELP!ST15223.rear axle weight: 40000engine type: DD15number of rear axles: Tandem