I know you didn’t ask but fwiw I tow TTs with my Ram 1500 commercially. You will need a properly sized WDH and to set the hitch per scale results. Some air bags or neoprene Sumu springs might also be beneficial if you load the bed. Also starting 2013 you could the 8 speed which was a dramatic improvement in fuel economy, towing & towing economy, hill decent control, acceleration & reliability. I have 375,000 miles on my 2014 Ecodiesel 8 speed. No trans issues. Both Chevy & Ford had a better transmission than the old 4/5/6 speed.