www.kustomz.com for an intake... that's a good place to start.

Look for someone selling an SVT exhaust for cheap, and buy that from em.

How much money are you planning on spending?

I suggest hopping down to the Zetec forum and tapping the search button and looking for stuff that you might be interested in. Such as your own post from a couple months ago that actually had some decent suggestions. Or this post or this one.