The MK Indy is a Lotus 7 replica based on the Locost principle, production started in 1997 and built by MK Sportscars in Maltby, Rotherham. The Indy has an independent rear suspension using the differential and drive shafts from a Ford Sierra. It uses many other components from the Sierra, including front hubs and steering rack. Further, it can be fitted with any of a variety of engines, the most popular choices being the Ford Pinto engine from the Sierra for its ease and cheapness or a large motorcycle engine for its light weight and high rpm.