catalytic

So my catalytic converter on my 05 Libby went out and I need to replace it. I am looking for something that does not require me to weld in a new one. Also I was going to go with the Mopar, but that are no longer making it, so it is not an option. What are some of the best options I can do with...

Does anyone have a video, photos, or any other advice on replacing the Cats? I have a 2003 Jeep Liberty Sport. Had problem with front right cat (P0420). Jeep has 150K miles and just wanted to get it to pass inspection (wont with P0420) so I ordered a cheapo off ebay that guaranteed fit ...