The SVT radiator core was thicker than any of the regular Contour V6 cores, 2-row, and near 2" thick IIRC, and thicker SVT replacement rads went obsolete long ago. The ready-to-go aftermarket is only thinner core rads for the 'plebeian' Contours, and this includes the Andy's AutoSport parts you linked.
Perhaps you could talk Griffin, Fluidyne or Mishimoto into a custom, drop-in, thick-core radiator with Aluminum tanks and all welded construction, but one-off, it's going to cost you plenty, and probably won't perform any better than the stock SVT rad. If somebody makes enough thick-core custom SVT rads, the price will get better and you might get a group purchase going to snag the performance folks here with 3.0L motors and/or forced induction, tho most here, including me, would question the necessity for it.
Genesis Auto Parts has an all Aluminum rad for the Contour, welded tanks and all, but it's only a 1-row, 1" thick core.
http://www.genesisautoparts.com/all_aluminum_radiator-ford-contour-1999.htm
I have one sitting on the shelf at home, the TIG quality is passable, but I've seen better.