I wanna make this thread to bring up a discussion on the best sounding and performing exhaust for a cobalt ss 2.0l, I'm running auto dynasty longtube racing headers, these are isometric, which are almost exactly like zzp for half the price, except they have a fatty that fools you into thinking there's a cat but it's catless 🐱. Thinking bout welding my own three inch exhaust but not sure. Thoughts please.

 

First off, welcome to the forums.

As to your exhaust question, I'd post it again here:
2.0L LSJ Performance Tech - Cobalt SS Network

You will probably get more help on the subject.