Quick question, I just got some eBay headers and I was wondering if the catalytic converter is connected to the stock headers.
If so, I probably wont pass inspections now right?

 

First... it's header. Not headers.
Second, the first cat converter is indeed in the header and you'll remove it once you install your new item.
Third, will you pass inspection? Depends where you live, who does the check, and how much you pay.

 

you'll probably throw a code for this same reason. you'll probably need to back your second o2 sensor out of the main exhaust flow. may not be completely legal but you'll pass as long as the inspector doesn't stick his nose right up next to it