Im planning on doing the side skirts and rear bumper on my mystique as well. I got my exhaust of a friends SVT, but it was a magnaflow exhaust that the exhaust shop put together.

1997 Mercury Mystique -Tinted, Debadged, and no more door ding guards -Dual Exhaust With Magnaflow Mufflers -Gutted Precats -SVT rear sway bar w/ES bushings