Catalytic Converter

I need to replace the catalytic converter on a 2001 toyota mr2 spyder. the part needs to meet calfornia’s emission. i live in austin texas and can’t find an after market part.

For my education how did you come to the conclusion that a 2001 mr2 has a different converter for CA only.

That is what the dealer and the muffler shop that it took it to told me.