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

I looked at NHRA and some track websites. Not sure if bars are needed at 7.35 or 7.50 1/8 mile. Did see where I am right at the edge of needing a helmet. LOL, maybe my dirt bike helmet with the face guard will do (not really). The track I run is a listed NHRA track.

I don't want to put in bars. In fact I am gonna put back in a stock interior including the back seat. The guys were telling me last night that if you do make a run and get into a time/speed where you need more eqpt they tell you to put it on the trailer or drive it home till you get it changed. Just planning ahead...