Contour Zetec headers??
There are some shorty headers made that will bolt up to the main cat on the Zetec, but I think they're fugly and near useless. Somebody will let you in on what is available for shorties, I don't know the names off hand.
Far as I know, only LocoZ has custom fabbed full length headers. There are no full length aftermarket headers made for the Contour Zetec, although ZXtuner.com is now making Zetec headers for the Cougar that
might work on the Contour also. You'll have to call them up to ask.
Full length headers will eliminate your cat, so you'll have to extend some wiring & have a cat & O2 sensor bung welded into your exhaust system to remain legal

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Welcome to CEG, by the way.