Like the title says, where might I be able to find an O2 bung the same size as the one located 'in' the '96 catalytic converters?

Long story short, I received the wrong one and had my exhaust guy mount it up thinking I'd be able to find the bung easily. Well, I'm a week into my search with no luck. Help me out fellas.

-Mike

 

http://www.hoganperformance.com/o2_sensor_bungs.htm

Should be that 2nd one

 

I surely do appreciate it. I'll order manana.

-Mike