required to have a full set of Roll Cages and safety harnesses to protect the drivers. Some tracks have what they call Hornets which are smaller unibody cars with 4 cylinder engines, that must be pretty much as they left the factory except for the roll cage. These would also be considered Pure Stock, but not full sized. Street Stock These are also Full-bodied cars but can have changes to the frame, engines, tires and some changes to the suspension. They have to have bodies shaped like the actual cars that are used on the street direct from the factory. As with the Pure Stocks cars, all are required to have a full set of Roll Cages and safety harnesses to protect the drivers. Super Stock Super Stock cars are very similar to Late Models and can be built from the ground up by the racers. They have limited engines and other restricted items that keep them from being full blown Late Models, but they are much more powerful than the Street Stocks and are an intermediate class between Street Stock, Modifieds and Late Models. The bodies are after market or made by the racers in the general shape of the brand being represented (Chev, Ford, Dodge, etc). Non-production cars These are stock cars custom built for racing, usually with welded tubular frames and custom built or purchased bodies. The most popular type of dirt full-bodied stock cars are late models. They are categorized depending on what track and series that is being run. The racetrack dictates what type of late model is raced, but most fall into one of these categories: Late model Current dirt super late models feature steel constructed tube frame chassis with aluminium bodies that give them the sleek aerodynamic appearance of a stock race car but there is nothing stock about these 2300 pound machines. The cars are powered by an motor than can turn in excess of 9,000 rpm. The engines are based on V-8 Chevrolet, Chrysler, and Ford power plants. These cars are considered to be the most sophisticated cars in dirt racing. They hit speeds well over 100 mph (160 km/h) and slide around the dirt corners. They are raced on dirt tracks throughout the country anywhere from 1/5 to one mile. The expense for these cars is significant. The cost for one complete race-ready late model is around $70,000. There is