Yes that is what I was thinking at first too..Just get the rear section and it should be enough...IT WASN'T. lol
I got the rear end after only 7 days of owning my brand new Z. It sounded great and there was no sound in the cabin really. It was just that the original tone I heard in the videos wasn't really present and that's why I had gone with Meisterschaft. So i got a Y pipe, which didn't really change much, then I went for custom 3 in mid pipe, and that's where I am now. If you lined up a full cat back with mine I'm sure they would be identical in sound.
I am some what thinking about test pipes lol.
370z Meisterschaft Full exhaust with 3" Pipeing - YouTube