These came as spares for an 1957 Kurtis Kraft 500 G Indy car. This Halibrand differential assembly is a top-quality product that will enhance the performance of your vehicle. With its high-quality construction and durable design, this differential assembly is sure to provide you with years of reliable service. The assembly is suitable for use in a variety of vehicles, including Lincoln Mercury Oldsmobile Pontiac Plymouth DeSoto, among others. It features a rear placement on the vehicle and is designed to fit perfectly with your current system. This Halibrand differential assembly does not compromise on quality and is perfect for those who want to take their driving experience to the next level.