Please remember that there are two critical factors for fifth wheel towing.
You asked about pulling. Yes, its one of the factors, but the one which usually gives folks the very least amount of trouble.
So be assured that your truck CAN pull whatever you buy.
BUT, it is the second factor that messes up more people than anything else.
Factor 2: and the very most important one; Can your truck CARRY the weight of the fifth wheel and hitch equipment?
A lot of the say 16 inch single rear tires on new pickups are rated in the 3,000 pound load range. So with two tires you have 6,000 pounds (maybe a couple hundred pounds more) total carrying capacity.
But, these same tires are already carrying the weight of the truck, so that 6,000 pounds is reduced to about 3,000 pounds or so available to carry fifth wheel pin weight and weight of hitch equipment.
So watch the LOADED hitch weights of any fifth wheel you get into. A rule of thumb is to take the gross weight rating of the fifth wheel and multiply that by 20 to 25 percent. That should give you the max total pin weight of any particular fifth wheel.