If the track you are going to run at is strict they will enforce NHRA regulations. Which are: Roll bar for covertable runing faster then 13.99s, and other cars at 11.99s it is acceptable for cars running as low as 10.00s. aslong as no mod has been done to the firewall and floorboards. If the f/w of floor was moded, then a full cage is required beginning at 10.99s. Full cage required if your running 9.99s or faster and 135mph or faster (regardless of et). These are NHRA specs and if you are 9.99s or 135mph or faster your cage has to be inspected and certified every 3 years.
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