We are towing a Cougar 291RLS with 2 slides(about 9800# ) with our 2007 F150 Lariat 4WD with the 7200# payload group,3.73 rear end,and Firestone 5000# air bags.I would not go into the mountains towing this way, but most of our trips are within 200-500 miles and the truck handles this just fine.I am not saying that a F350 would not be better,but when the truck is used 90% of the time not towing the