I believe there's a difference between HB and sedan.
There are two cats, plus the system from beyond the second cat all the way to the end. When you say "mostly the catted section" do you mean you want to buy the part from the engine back to just after the second cat, aka both cats, or do you mean mostly the section beyond the cats or... well you just aren't clear.
I have the second cat, and everything back from that, for a hatchback. A turbo hatchback, does that make a difference?