I know to go over 150mph you need a cage…I think the fire supression system is up over 185. But those are just guesses based on looking at some of the cars and their times.
Looks like they will be updating the vehicle classes and preparing your vehicle sections shortly. There appear to be more runs this year, but I don’t know if my cousins are participating in them as the camaro is getting ready to have the road course motor and trans swapped in.