Is there a header set up that doesn't remove the catalytic converter?
Headers are almost universally recommended over the powerlog + downpipe combo for someone who plans to mod substantially. That said, I live in a state that has emissions testing, and need this car to be legal (it's a daily driver as well). Here are my questions:
1. Is there a header set up that, without any modification, doesn't remove the cat?
2. Is it possible to combine a header with a different downpipe to avoid removing the cat, and is this something I could do myself, without welding?
I assume if neither of these are possible, I'd have to take the car to a shop to get the headers installed with a cat. I have a 2002 gtp if that makes a difference.
Thanks!