MikeQ7

Hi all, I'm relatively new to the Audi range. I recently purchased a 2006 q7 with a slight crack in the rear bumper. As I like the v12 I thought about swapping for this, now it's my understanding that it wouldn't work because you need the fenders and side panels etc, my question is if I brought the v12 rear bumper could I separate both bumpers and swap the bottom part of the v12 bumper to the top part of my current bumper? Cheers