The same exhausts doesn't neccesarily sound the same on different motors and transmissions.

My 5-Zigen Fireball sounded different when I had my D15/Auto and B16/5Spd.

The WS may sound different from what you have heard. I will try to capture a clip of mine for you if I get the chance.

There are a few that fall into your desired exhaust:
Greddy Evo-- might as well go for it if you like it.
RS*R
WS
Remus :naughty: