To confirm the diffuser was a BMW part it fit fine and I used this guide to install it -
http://www.6post.com/forums/showthread.php?t=927817
Cotswold BMW parts -
http://www.cotswoldgroup.com/bmw/ser...d-accessories/
Trinity Motorsport for the IND grills -
https://www.trinityautosport.com/car...r-side-markers
The carbon really pops on your car against the blue