B8 sub in B6

[CrazyCal]

I'm curious.... Is it possible, or even worth it, to install a B8 B&O Sub into a B6 as an almost direct swap? I have no experience with (have never even heard) the B8 sound system.

Picture of B&O Sub:
http://i739.photobucket.com/albums/xx32/kyee888/Audi%20S4/IMG_0798.jpg

[CrazyCal]

Any of you B8 guys have measurements on your sub? Or at least the size of the hole for it?