Just remember! Towing the load is easy, any truck can move a big load once it gets started. You NEED to work on braking! I tow a 14k toyhauler. I added a triple axle digital brake controller and an exhaust brake. We pulled to Oregon through the cascades, 8% windy road for 10 miles, with a six speed, i shifted into 4th, set the exhaust brake, and cruised down at 40 mph without ever touching the brake pedal. Also too, just because you can haul at 80, doesn't mean you should! I run 68 top speed no matter where I go.