Not totally unexpectedly recorded high levels across the board of NOx, HC, and CO. Per Missouri statute, I have to spend $450 on parts, or on parts plus labor at a state certified emissions test facility, then I can get a waiver if the car still doesn't pass. Anybody had this type of experience? Are there any reliably successful fixes? As long as I have to spend $450, might as well have a clean running car, too. Or will that be far more than $450?