348K miles and only 1 injector? If legit, this is outstanding! My ('01 LB7) injectors only lasted 187K before they started smoking. 2nd set started checking out after 95K more. Now, I smell diesel in the exhaust after 55K on the 3rd set. Balance rates (while not all inclusive) are all over the place but still under the max of 4.0/6.0 (park/in gear).

339K miles on mine and the head gaskets were recently replaced. Rear xfer case cover suffered the wear hole thing and that was replaced too. Water pump at 189K miles. Still, I'd get another DMax. Which one though?