The Flaming River steering box we ordered was made of cast iron, which means it's heavier than the aluminum version also available. But this Camaro runs wheels-up 10-second e.t.'s and we felt that an aluminum box might break if subjected to too many hard launches. Besides the iron box is still about 13 pounds lighter then the stock one. And you'll also be removing the power steering pump and its hoses, which take off another 12 pounds.