how much NOS??????

i have a full rebuilt 302 with felpro everything with built(stock) heads, f-303 cam performer rpm air-gap intake and 650 cfm carb and want to get a direct port nos system want to spray a 175 shot in it but im not sure if i can srpay more then that becase i dont want to fry the ring or melt the pistons the ring are better then stock...........

should i spray??????
150
175
200

i drive the car every day......

Forged pistons?

For me, it's better to be safe than sorry so I wouldn't go over 150hp...

i read that the the 93 cobra motor came with forged pistons (dont remember what brand) from factory.........
and i have that motor.......

I still wouldnt go over 150 shot with a stock bottom end