I know this topic has been covered many times but i cant find the info i need. I am hoping that someone can help.....Please

I would like to retrofit the bluetooth kit in to my 08 Scirocco but can i find the part numbers for what i need...No!
I have a donor bluetooth unit (1Z0 035 729 B) and so require the VW part numbers for the parts below. I have tried my local dealer but they are useless (in fact they arent that good!) as they wont give me details for anything that isnt already on the car..
If anyone can help i would be very grateful.
The VW part numbers i need are for the following.
1. The cable kit to connect the unit to the rns510
2. The metal bracket so i can mount underneath the passenger seat
3. The polystyrene housing that covers the bluetooth unit
4. The microphone
Any help will be appreciated so thanks in advance.