Hello, I have done my best to research what to buy for my first truck, but finding information to spec out what I need has been difficult. I have the opportunity to buy a 2016 western star glider day cab with a Detroit 12.7L 60 series. Only 20k miles. Truck looks absolutely mint. I will be towing a 6500 gallon water tanker behind it with a diesel pump system and generator (an old fire station tanker). Will this truck have enough power to tow my tanker? Any information is greatly helpful. Thank you!