As already mentioned, the truck's payload will be the limiting factor when it comes to towing a 5W.
The best way to determine the capacity you have available is a trip to the weigh scales and weigh the truck, front and back axles, with full fuel, people and gear that you would normally carry. You need to add about 175 lbs to the rear axle weight for a manual hitch. The Rockwood/Flagstaff 5W come with a Revolution pinbox and a sliding hitch won't be required.
The weight capacity available for pin weight would be the truck's GVWR minus the total scaled weight. You can also look at capacity by subtracting the weighed rear axle weight from the truck's GAWR.
The bad news is that you probably have about 1000 - 1100 lb capacity by GVWR and maybe 1300 - 1400 lb capacity by GAWR. In my opinion, exceeding the rear axle weight rating of the truck is unacceptable.
Nights camped in 2013 - 55, 2014 - 105, 2015 - 63