Yes, any Detroit dealer can. Make sure that you ask them about the torque rating. They can do 600 HP at 1850 ft/lbs or 2050 ft/bs. They won't set it any higher than the driveline rating.
Great, thanks. The truck is already at 560hp and 2050 ft/lbs. Dealer too busy to get me an answer. Any idea what the cost to up rate is?