The best way to learn about stock racing is to get a rule book.. It took me several readings just to figure out how to determine what class I could run... But, its much easier once you figure a couple... But the rule book will tell you what you can and can not do... You will quickly learn that there is more you can not do than do.... Especially in the engine... There are a lot of racers that are very passionate about this class and live to race in it...