Right now I have an O.S 21 VZR ver2 that has under half a gallon through it and I am looking at a Novarossi Revenge also to get some wheel time in on my new nitro. Will these hold up for club racing and (KEEP UP) in a sportsman class ? Just want to get use to the car before I pull the trigger on a suitable mill.

If the Revenge has 7 Lights, it's more than adequate for sportsman class.