hitches have towing classes in relationship to weight desired to be pulled, e,g. class III 5000lbs....class 4, 7500. lbs. class 5, .10,000.lbs. most hitch installers only stock class III...you can get a weight distributing hitch for the tongue of boat trailer and automatically double the capacity of whichever hitch you have on vehicle. you're buying enough truck,you just need to buy enough hitch. if you need more explanation/help e-mail me.
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