So I've done a ton of googling and even called up a few dealers, and I think this CF diffuser will fit a non-M Sport F10!
http://extremedimensions.com/2011-20...Piece-CFP.html
They make no mention of requiring an M-Sport and their installation pic even shows a non-M sport F10. So any input before I place the order on Monday? Also if anyone knows of ANY CF rear diffusers that fit a non-M sport F10, please post a link. Thank you!