I'm down with people using LiPo's. You should be able to run them in a mod, outlaw 19t (everything goes),or outlaw stock classes.
I don't have any lipos because I can't use them at any of the big races that I go to. I race 3 times a week. There aer a couple of people that have them and when we run stock it is very discouraging to get killed when they race. I have a power sponsor and have great equpitment but it is still not fair.