There's tons of threads already about this. But I'm a nice guy O0 so I won't flame you for making a new one. Just make sure you search next time.
Just FYI... your 2008 is the same as a 2007 or a 2006. They are considered a Mark 5 or MkV GTI. They have the same 2.0T FSI engine as some of the Audi's as well. If you're looking for performance parts don't rule out 06+ years and anything that says 2.0T FSI.