emissions

So basically somebody stole my catalytic converter, but it is what it is. and that got me thinking to put on a new exhaust on since they cut a chunk from the manifolds. in the perfect world, I'd like to put on some BBK long tube manifolds, and the only manifolds they make for an automatic...

I had a question about these cars, will they run any different with malfunctioning smog equipment? I have CEL emissions codes such as 332, 314, 311, 334 and 558 KOEO and KOER. Thing is I dont have smog in my state so I'm not too worried and don't wanna spend the money to fix it or delete it but...