I need help with my stereo fit!

[RaulNicholas]

Hello, I own a Polo 9n from 2005 and it's a beautiful car. But I want to install a RCD330, as far as I know I need a CANBUS Adapter.
But what I worry about is how it will fit or if it will fit at all. It also needs place for 4 screws. How can I mount it and also make it fit nicely?
If you could help me with my problem I will be very thankful.
Thank you in advance!