"For example, an FR500C variant was homologated into, the now defunct, Grand Am series

While parts may be sourced to convert an S197 chassis Mustang into an FR500 "S" or "C" specification race car, Ford Racing moved to the newer Boss 302 "S" and "R" variants in 2012.Regardless, many FR500-based cars are still found competing in all levels of road racing competition, with NASA American Iron, SCCA Touring Class, Trans Am Series, and SCCA World Challenge Pro Racing, to name a few.