Roll Cage

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So I need to figure out what I want to do, I am building a street / strip Vehicle to have some fun in and I was want to race out at our local track BIR Brainerd Raceway Bracket Racing on Wednesday nights and I was thinking to be around the low 11s in the 1/4 and I cant figure out what the rule is for a roll cage I have a 78 Ford F150 That is also going to be a show piece and Not sure I want a roll cage in it don't get me wrong I am a rule follower but my thing is I guess I need to re-think my build as for the high performance parts I was going to put on it, I have tried to look at the NHRA rules online but I cant figure out what they are saying and Bir does not have anything on it, does anybody know the rules on speed and roll cages????

11.50 and slower does not need a cage or roll bar

11.49-10.00 requires a minimum 6 point roll bar

9.99-8.50 or faster than 135mph requires a 10 point roll cage with certification sticker