[Gravter]

... is it worth it or would I be missing some back pressure?
Also, how would this fit on a stock flex pipe? If not, what is all needed to make it fit?
A turbo/surpercharger (if they ever make one for Duratec) is still on my list for the future of my ST, so this would compliment it.
I've seen only one picture of this on a Focus and the pipe seems to be on an angle at the back... very ricey look imho.