2005, V6, 180k miles.
Think my cats are toast. Started getting a CEL last summer. Code pointed to driver's side, so I spaced out the rear O2 sensor with a bored out spark plug defouler. That took care of it for a while, but it came back & it's been back for a while now and both banks throwing codes.
What are my options? Need to do this on a budget. Don't plan on keeping the vehicle for much longer. 2-3 years at the very most.