The 6.0 is not a good pulling truck? I don't think you know what your talking about. It is not a diesel, but it pulls very well, much better than I would have thought. You don't hear many people complain about the pulling power of the 6.0, gas mileage maybe, but seldom do you hear an actual owner complain of lack of towing capability. Lastly you never hear of someone complain about lack of longevity. Its a very durable motor. Overall its a very competent towing engine, especially in the the 2011 and newer chassis.