Are there any catalytic converters for a 2004 infinity g35 that I can get online Instead of going through a dealer 3k for 2 new ones is ridiculous

 

Yes. Depends where u are. Im in LA and can find some on Offerup. I just saw someone even giving his away for free.

Do you want OEM cats? You could go with some high flow cats.

 

I want whichever will pass emissions I’m in Missouri

 

You need to determine if Missouri will pass you with exhaust modifications....

 

I'm shocked to hear Missouri still requires inspections much less emmissions testing. My home state of Oklahoma no longer requires safety inspections of any kind. Amazing the jalopies you see driving around with duct tape and bungy cords holding things together. I bought Berk HFC for my G used on this forum. They pass emmissions but they're a little raspy.

 

In Texas, as long as you don't have a CEL you pass. Most high flow cats and downpipes have extenders for the O2 to keep you from getting a CEL. If they do a visual inspection and put sniffers up the tailpipe(s) you definitely won't pass with downpipes but should with high flow cats.