Production car racing
Production car racing, otherwise known as showroom stock in the US, is an economical and rules restricted version of touring car racing, mainly used to restrict costs. Numerous production racing categories are based on particular makes of cars.
Most series follow the Group N regulation with a few exceptions. There are several different series that are run all over the world, most notably, Japan s Super Taikyu and IMSA s Firehawk Series which ran between the 1980s to 1990s all over the United States.