The end result was the lower Catalytic converter that was needing replaced. I was able to find it at Oreilly's for $176 plus tax the day I needed it and it was $191 at AutoZone. If I had more time to order one shipped I could have saved probably $50. But being that it was my daughters car and she needed to head back to college in a couple of days I got the first available. My mechanic labor was $108.00.