PLEASE don't take the SVT parts off and cobble them onto a regular Contour.
There are getting to be fewer and fewer SVTs every day. It would be a travesty to ruin one that just needs engine work and seats, no matter how good of a job you do in transferring parts. If you transfer
anything, take the bottom end of the good engine and put it into the SVT, with the SVT parts on top. Better yet would be a 3L, as has already been mentioned.
Since you said you can't settle for moderate performance, modding a car with an ATX is going to give you moderate performance right there! You've got the regular Contour to drive while you fix the SVT, so you don't need to do it immediately. Plus, you can sell the regular Contour when you get the SVT up and running.
Please, in the name of all that is good and holy -
don't cannibalize the SVT!
Marty