What are the details with this breakage?

It is illegal for salvage yard to sell you a used catalytic converter. $900 is ridiculous...

St Charles Isuzu can get it to you for ~$655.61 over the internet with the web discount rate.

6 bolts, 3 on the flange at the exhaust header, and 3 on the flange after the cat. just need to remember to take out the O2 sensors (2).