Hey, yes, I've purchased it and mount it without any problems. It's very straightforward and they made very nice how to video:
https://www.youtube.com/watch?v=YZeyeWwL4ug&t=36s
My only downside and complaint is that A8 D3 screen is very lowres and it shows... But I'm getting use to it.
Upside is a very nice integration of phone with MMI as well as clean and crisp sound! Go for it, worth every penny.