CLS Shooting brake rear retrofit

[kdavid]

Hi guys. I have CLS 350 CDI 4 matic 2013 and i want to retrofit cars read to this: https://brakebanzeen.files.wordpress.com/2012/06/2013-mercedes-benz-cls-shooting-brake-rear.jpg

From this:
http://images.caricos.com/b/brabus/...s_shooting_brake_power_diesel_9_1920x1080.jpg

You can see missing aluminium part down betwen exhaust.
Is it possible to retrofit it?

Thank you

Br
Dave