nitrous is considered forced induction

A zc will not yeild 200hp n/a in streetable form. Even with the bottle, its a stretch. I dont know much about nitrous, but I'd think that you would need to beef up your internals for that much nitrous. If you want 200 hp n/a, maybe even the b16 is not enough. I'd recommend at least a b18c, a b18c5 or a built b20.

May I ask what is your budget? It sounds like the b16 is somewhat pricey for you. 200 hp n/a will really milk your pockets.