stock parts

I have a stock 02 z28 and was wondering if I could run no2 with stock parts and would it be safe and what hp should i run

A buddy of mine with a 99 SS had good luck with the NOS 5177 dry kit. I think its limited to 125HP with the stock fuel system. Booster pump or upgraded in-tank pump required over that (and maybe not a bad idea even with the basic kit). He eventually took the LS1 to mid 10's at 126MPH with the kit, on basically a stock bottom end with heads/cam and long tubes. After several 100 passes and running 150HP, he blew a head gasket.