2016 Ram 2500 with 6.4 hemi and 4.1 towing 12K

Thanks for the insight into the 6.4. I only tow an 8500 lb loaded 5th wheel with a 2500 hemi 5.7 and it does very well. My only worry is longevity and how this engine will hold up to between 10-15,000 towing mileage annually. I would consider the 6.4 for my next truck for that reason--durability.