Before we shell out $500 for re-certified cats, is there someone near me who has known good cat converters who does not need them? My poor daughter's Thunderbird has had more repairs lately than she can afford. We've fixed missfires, coolant leaks, and replaced a bad oxy senser. Her stock cats are partly melted down and she failed emissions testing because of it. We're willing to drive to someone who has a cat system for her car. Please reply soon, as she intends to use plastic to buy a high priced re-certified system in the near future.