The ESM doesn't seem to ahve anything helpful...I looked too.

Stormy, you're photos are good, but show what are the only cats for 2000 owners (except California). We don't have the ones down lower at all. Also, you indicate that there isn't one on the right side but it is shown very clearly in your picture. The main thing is that for 2000 we only have cats attached right at the manifold and nothing downstream. The cats at the manifold are displaced by the headers. So it looks like we would either need to go to the 2001+ setup or come up with another solution.