Check out contour.org. Theres quite a few vortech owners who are dying to get of their units. I think every person thats running the Vortech on their contour/cougar has either stripped the jackshaft and/or gotten oil leaks. Its a piece of junk.
If you are really set on buying one, I know there is a guy on contour.org who iirc was selling his for about $4200 which includes custom made msds headers, oil accusump, and powdercoated pipes.
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"The CEG Nazi"
www.contour.org
1996 Ford Contour SE - Sold
3.0L V6 and Arizona Dyno Chip Turbo Kit
364 whp, 410 wtq @ 16 psi and only 4,700 rpms.
1999 Tropic Green SVT Contour - Bone stock and MINT