I don't like Zex because their kits aren't rated at the wheels like the NX or NOS kits. Your motor will be ok with a 100 shot, but the car will need to be tuned on the dyno. Just be sure to get all the safety precautions like fuel pressure safety switch, WOT switch, window switch etc.
BTW- NOS is a brand, it does not literally mean nitrous oxide. NOS= nitrous oxide sytems