Well warriorspeed this is the second post you have asked about racing, the problem is nobody on here can answer your questions, rules change from track to track. If the races are ama sanciotned then the rules stay the same. But from what i can tell where you are racing is not ama sanctioned (thus meaning you dont have to be part of the ama to race) You need to call the track or find the rules online.
The Dirt drag track where i am going to be racing a full season next year has some rules as the following.
Amature class-can only have pipe and filter modifications, limited to 12" wheel
Semi-pro- anything goes as long as you dont exceed the maximum cc's in your class, no nitrous...etc
The pro is all out.
But it all changes from track to track, so you have to call and find out
