So where can I find the rules about what equipment is needed

My car is currently really quiet at the track compared to the rest but on the street it sound badass loud to me with the lumpy cam. I am going from kinked bends 2 1/2 through mufflers to smooth bends 3" with x pipe through mufflers. Sound won't be the problem except maybe with cops.

I am thinking it is 7.35 for bars but can't find it in writing.

Soooo, how can a guy know if he is fixing to bust the "speed limit" during a run? Once you bust, will they let you back if you tell them that you changed something and slowed it down? Maybe stack a bunch of metal weights in the trunk or something that can then be removed for the street. Gonna have to ask around the track tonight.