1979 GMC 7000 , Tanker Truck, This tanker truck is 9'2" tall. The wheelbase of the truck is 173". The front GVWR is 11,500lbs. The rear GVWR is 21,200lbs. The total GVWR is 32,700lbs. The tanker is made by Boston Steel, This tanker truck is 9'2" tall. The wheelbase of the truck is 173". The front GVWR is 11,500lbs. The rear GVWR is 21,200lbs. The total GVWR is 32,700lbs. The tanker is made by Boston Steel