Hey Guys,
I really need to get a new cat so I can pass smog, and alot of the ones I find are not CA legal. I have no idea what makes it CA legal. Currently the cat I have is embossed with AC on the bottom for AC Delco. I'd rather get a high flow cat than another stocker (if I can even find one). Does anyone here know what the deal is in CA?

I would go to your local parts store in CA and see what they recommend. Any new style converter will be alot more free flowing than the old bead pan style type that yours probably has. I got mine at autozone here in NY for $65 works fine last a long time