I had the top set on my legacy when i did the ST and would agree with the evo statement .. with a 3" exhaust, I was 200kw with them and it was a very loud kw .. best comment I had got was " bro you car sounds sort of like a subie at idle, an evo when you start taking off, and an evo on roids when boosting... (just personal experience) Also they where very torquey .. the back of the car on bilstenz would totally drop, as soon as i went to standard the back stopd dropn..