There’s no word on whether this has been verified by the Guinness World Records committee, but this guy certainly thinks this Ford F350 Diesel is packing the world’s largest exhaust stacks. And how big are the stacks exactly? 24 inches according to the description. That sounds pretty damn big, but maybe you know of someone with bigger exhaust stacks? Maybe that person is you? If so, get on here with evidence as everyone would love to see it.