I appreciate your determination. I found my 500 SEC in Seattle. Flew up and drove it home. Sweet. But it too failed at smog. Had all the California smog equipment on it as it entered the country at San Francisco in 1984. I am here in Sacramento. I went to a smog only and it failed. Took it to a smog repair and they put in a new oxygen sensor. Problem solved this time. They told me the cat was tired so all my change is collecting in a big jar for a new cat down the road.
Hope this helps. Good luck.
