Matt Everett

I have an o8 impreza wrx wagon. I want to make it breath better, New down pipe, new exhaust header, no or new cat, new pipe front to back, a new more free flowing muffler. And a cold air intake if that is posiable Then the real trouble is i am throwing a bearing on my stock turbo and instead of just replacing it thought about putting the one from an sti on it just don't know if it will work any help would be appreciated i am very new at this.