I've only seen it as a part of the airbox. I might have a spare airbox around somewhere, but I'd have to look.
Honestly, tho, you don't really need the thing. I've not had any trouble with the thing being long disconnected (including driving in the Rockies and northern Indiana in the wintertime...) since I can't honestly be arsed to get a new flexible duct for mine. And, if it were really that important, I'd not have passed smog checks without it, either.
Now, if I could just talk them into letting me delete the EGR - I've got reports done on their equipment that shows the engine runs cleaner without it...