Just to build upon Christian's post, and somewhat simplify it in the process:
SVT side skirts and rear bumper will bolt right up to the existing holes in the Mystique. The front bumper will have to be cut midway and molded to the Mystique front bumper, and this can get expensive. As Christian said, you can't do anything with the hood because the "stylish" CF ones made, as hideous as they are, are Contour exclusive. But I like the lines better in the Mystique hood anyway.
You can do projector headlights and the like, but you have to be even more careful than the Contour crew has to be because there are no aftermarket headlamp replacements such as Depot headlights for the Mystique. You have to go back to the dealer for new headlights as OEM ones are the only things made now and they are preciously few left.
Hope this helps you out some more.
-SAV
