My dad is looking for a truck that will haul are 40 foot fifth wheel camper and not worry about anything. He found a 2011 f350 dually 6.7 with 230,000 with not a thing done to it for about 19,000, lariat loaded but not a king ranch. Anything we should look for or? I am a 7.3 guy my self but my dad wants a nice quiet truck he can haul people from work in when not pulling and you can barely hear these new trucks running which is perfect, and not to mention they took his company vehicle away and said he has to get a 06 or newer vehicle and he is not a fan of the 6.0 so its either a 6.4 or 6.7 that will be kept bone stock.