Catalytic converter replacement ?

Hello,

A catalytic converter can be replaced using simple hand tools.
One of the thing you have to be careful is not to brake a bolt or strip out a nut. As typically exhaust bolts are supportable to rust due to high heat.
It is a good idea to use penetrating oil into the mounting nuts and bolt of the converters.
Have you determined which is the bad catalytic converter? What trouble codes are you getting?

Here are few helpful articles on how to diagnose and replace catalytic converter:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

https://youtu.be/kNXh1Lphzr4

Please let me know of any questions.

Thank you.