here is a sound clip of the SE when they frist prototyped it on my car
Welcome to the official GReddy USA blog: GReddy exhaust prototyping...370Z, SE Spectrum Elite
also here are pics of the exhuast out of the box:
PICs of Greddy SE Exhaust
personally, i would only recommend the Ti-C if your going turbo soon... if your car isn't turboed its going to be very very very very loud, maybe unbearable for some? However, if your car IS turboed or if you are planning to go that route, once the turbo is in, it will be nice and subtle (little will ppl know the beast behind it!)