Now just wondering, when you refer to "tow package" is that just the hitch assembly or the entire package? My GMC has the tow package from the factory, hitch assembly, larger cooling system, wiring setup for trailer brakes, special transmission gearing option and I can tow 5,000 lb. with that package. If you get the same truck without the factory tow package you can put a hitch assembly on the back but towing capacity is only 2,000 lb. Because I tow a motorcycle trailer w/ bike and sometimes a boat I wouldn't want anything less then the factory tow package with 5,000 lb. capacity.