First off, why are they saying you need all of that?? What did you take it in for? I'd bet if you still had the warranty they wouldn't be changing all of that! Chances are it's just O2 sensors, but can't say with out more details.
Parting out 95-97 Contours/Mystiques. Contact me directly at ALFIGOLS@yahoo.com if you're looking for a particular part.