Is a catalytic converter a must to pass emissions?

[blackshine007]

95 Civic / kpro / K20a2 / SSR header / resonator (not sure brand I am going with) / Vibrant 3" muffler.

Is a catalytic converter required to pass emissions here in ATL?

Is it true you can go outside the emissions area, get a PO Box, and register the vehicle to that Box??

I would like to pass emissions if possible

It's possible that you can pass without it. Just as long as your nox isn't that high, it should do just fine. But you can always go somewhere to get it pretested first to see if it will pass. If nox is high, throw a cat on it.