short bed hitch and pin requirements

As a Tundra owner pulling a 30 ft Cougar 5th wheel I can tell you you will be over payload on the truck. My Tundra is a reg cab long box with a payload of 1820 lbs which I figured would be ok, but when I weighted the truck with wife and I, full fuel and 5th wheel hitch truck weighted 6000 lbs leaving us 1200 lbs payload. First 5th wheel we had had 1500 dry pin weight, traded to one with 1040 hitch weight. We are usually 2 to 400 lbs over payload. Your payload will be about 400 lbs less than mine. Only modification I did to truck was Timbrens. Truck handles it very well. Best towing experience I ever had and have been towing for 40 years. Very stable and for gas engine lots of power. Just got home from Arizona, have pulled it down there last 2 years and all over BC. Having said all that I do not like being over legal weights especially when I go to BC where they enforce rv weights so am reluctantly thinking of 3/4 ton. If you don't mind being overweight you will find it a great tow vehicle in spite of the uninformed who call it a toy truck.