Just as the title says. What is the best and most simple way to go about this? I do not have emissions up here where I am so I don't care about that. I'm thinking I'm going to cut the side of the cat, knock it out and then weld the side back together.

 

Search!!!

https://dodgeforum.com/forum/2nd-gen...-your-cat.html

 

DON'T gut it, cut it out completely! Then just weld or clamp in a length of pipe necessary. I did

 

don't do it. i tried it and it sounds like $hit.
instead, as said, either cut it out and weld in pipe, or replace the whole cat pipe with the Jeggs offroad Y-pipe.

sell your old cat for $75, free shipping.
http://www.sellyourcatsdirect.com/index.html