Read the original post. His goal is to improve sound and looks. He has, for some reason, a borla exhaust.
hop on youtube and listen to some clips of Fast Intentions, Motordyne, or maybe Tomei, and see which one you like and get that
For looks, you need to dig through some picture threads and see what kinda aero, if any, you want
And then you need to fix the stance
Read this:
Wheel Fitment 101: START HERE
Then read it again
Then read it again
Then ask questions
Dont spend any money until then