ok guys i have a 2003 KB cobra with 590rwhp. my next buy is gonna be headers and x-pipe. im mostly going for better deeper sound but i always love a HP increase. i was wondering what you guys thought about all hearder and x-pipe combinations even cheap ass BBK's lol. and what kind of power increase i will see (if you know). i hear a lot off people love kooks and bassani. any feed back is much appreciated guys. thanks