I noticed on websites that sell STi stuff, there is a lot of "STi" branded items like trailing arms, lateral links, strut mounts, clutches, etc. What exactly "STi" do we already have on our STi's??? Anyone know? Can I just go by the color, if it's not pink then it's not STi? I don't want to pay for an STi or other brand product and it not be any better than what I already have.