Truck in my sig is my daily driver and tows a much heavier unit than your's does, but I have a lot of room to grow should I want to go to a heavier 5er...I love the Cummins with the Aisin.
As stated above the 6.4 gasser would do what you need to do with no more than you're towing,...but again, if thinking of going heavier down the road and towing in the mountains...I'd just prefer the Cummins and the Aisin....If one has "too much" truck, he doesn't worry much about if he has what it takes to do the job now or later down the road if you should opt to "go bigger" in an RV
