Marc Nordon Racing (MNR) was a British kit-car maker based at Darley near Harrogate, North Yorkshire. Founded by former touring-car driver and team owner Marc Nordon, the firm traced its roots to the late 1990s as a race-preparation and car-rental business and began kit-car manufacture in 2003. Its signature model was the Vortx, a Lotus Seven–style two-seater that used Ford Sierra running gear and, in RT+, RT Super and later…