Before the actual veterans show up, I'm going to recommend you run a search using the search link to the top right of the page.
Especially on this board, make this a habit before asking questions.
SVT exhaust costs I believe $300 from resident Ford parts guy, Bill Jenkins. I've yet to see installation described as difficult, but you will need to fabricate a hanger for the passenger side. I cannot answer bumper questions, but will say that I am personally holding off this mod until I have the assets to procure a rear SVT skirt. Quite honestly, this (skirt) is more aesthetic than anything in importance to me.
