P0430 CEL code question / Secondary CAT?

[Hogosha]

I have a laundry list of things that I need to do to the Boxster now that it is Spring. One of the things high on the list is tracking down CEL code P0430 (Catalytic Converter Conversion Too Low- Cylinders 4-6).

I have done a lot of reading on the issue, and plan on doing the usual things first. I will do a Durametric reading, swap the O2 sensors from side to side (cleaning the connections and holes), do a smoke test, and maybe a clean the MAF.

My question is, if it turns out to be the CAT, does the P0430 code indicate the secondary CAT? If so, rather than replace the CAT with a used one, wouldn't i be better off in the long run with just doing a Secondary CAT delete? I was thinking, based on the info here that I would go with the Cerket Werks setup.

I need opinions please.