To make a long story short...get Terrys Turbo.

The JC S/C cost about $3,000 and gives about a 20 lb/ft increase in torque. HP isn't very much either. NOT worth the money in my opinion. Plus we've(Zetec owners)been told directly by Jackson Racing that it wouldn't fit on the Contour. Differences in the engine bay if I remember correctly, throttle bodies also a problem.