About 6000 hours on units. Bought the boat in March in NJ and brought it to the Gulf because it had a COI. Owner has a new set of John Deere?s available and wants to make the swap out. He did injectors and aftercoolers when he got boat to the Gulf. He did raw water pumps a little later in the seasaon. He is pretty sure he has pre purchase survey, oil analysis and most recent from an oil change. No smoke on start up or spool up. Will be Bob tail and he’ll do the best he can trying to salvage harnesses upon removal. Would prefer to have buyer see them in a sea trial and have them removed and placed on buyers trailer in one move..