Both Ford and Ram now have gas engines combined with 6 speed transmissions that wil easily handle that load. Gm might also.. I'm considering one for my next truck. The new Ram with the 6.4 gasser will carry more weight and tow more than my 2010 with a Cummins. This combined with MUCH lower maintenance costs ie: $90.00 diesel oil change, $105.00 to replace the fuel filter at a dealer required every 15,000 miles, major emissions service required at 67,500 miles at a cost of $600.00-800.00 and more plus higher fuel costs and initial cost for the truck, has me pointed toward a gasser. Yes I know I can, and do, save by doing doing most of my own service and I know my mileage will be better when towing with a diesel but that only accounts for about 20-25% of my miles. If I was going to pull a bigger trailer it would require more engine. but my next trailer, if there is one, will most likely be smaller, not bigger. Just my opinion...Don