Loving my NBT EVO with ID6 also!
Brings the far better looking E70 platform up to date with the F platform interior, IMHO
You really need to see the 10.2" display with ID6 to believe how good it looks.
You can buy a complete kit (with or without touchscreen) from Bimmer Retrofit.
Depending on your X5s config should be in the $2000 range complete to your door.
If you want the touchscreen, which I didn't as the finger prints would drive me crazy, add about $500.
They have a couple of really good videos on their web page, and a complete detailed install video for the E70 (if you want to wee what's involved) on YouTube.