2007 Track Champion: Darrell Spradling The Mini Stocks, or Factory Four entry-level division proves that you do not have to spend a lot of money to have a great time on the race track. Any foreign or domestic 4 cylinder passenger car or light truck (no rotaries or turbos this year) can be converted into one of these racers by installing the necessary roll cage and personal safety equipment. The cars must otherwise remain strictly stock, including the required street tires. These cars are the only division to alternate race laps on the large and small ovals, providing lots of thrills and chills for the spectators  when the cars crisscross at race speed in front of the grandstands. For more technical information and specifications, click on the “Rules” button on this website