I removed the exhaust. It was pretty fuxored.
I trimmed up the tube on the collector and cleaned it off so I can weld to it.
It was "D" shaped, so I rounded it out with a hammer and my anvil.
Its not perfect, but I put it up against a spare piece of 2" tube and it fits well enough to weld.
And got a high flow cat.
Now I'm just waiting on the U-bends and the muffler.