I've really grown to hate the header options for these cars. All the cheap ones are not as cheap as they seem. They require work and money for them to work properly.

I would just buy a 3" catted downpipe, and leave your stock manifolds alone. You will never have to worry about it again.

That is what I did on my 04 comp g, and that car made more power than 99% of the cars on here.