California Catalytic converters?

[DaJesus]

Hey guys,
New guy to the forum here. My aveo recently failed smog. I didn't know at the time but the check engine light was on (led bulb was burned out).

due to a p0420 code I decided to check out the Cat and sure enough part of the honeycomb is melted. I'm sure this has to do with an overheating problem I had about 2 years ago and some oil falling into the combustion chamber when I replaced the head gasket.

I've been desperately trying to find a new Cat but since I live in hippie California, all the aftermarket cats out there are 49-state legal only. Head down to the dealer and they want $1800 for a new cat. I might as well buy a new car. I've been calling all the junk yards here in Socal but haven't been able to find a replacement.
Anybody have any other ideas of where I can find a cat? Or has anybody put in a universal cat in their Aveo?

Details: 2006 Aveo, LT hatchback. Thank you in advance.