Nathan Hill submitted a 2016 Mack Granite GU533 with a 4,400-gallon aluminum tank and National Vacuum Equipment 4307 blower (with silencer and enclosed in a stainless steel cabinet) from Imperial Industries. The Mack red rig is powered by a 345 hp Cummins ISL9 engine tied to an Allison automatic push-button six-speed transmission. Features include Dura-Bright Alcoa aluminum wheels, stainless steel visor, chrome bumper, mirrors, exhaust stack and air intakes, a Lincoln automatic chassis greasing system, top and rear manways, a Garnet SeeLeveL gauge and four rear sight glasses, 4-inch inlet and 6-inch dump with heated collars, toolbox, and 100-gallon aluminum
