Missing bluetooth module

[Strand]

Hi,
I have Passat that is made 11.2006. I have full red MFD, MF steering wheel and RCD300 (planning to upgrade).
Problem is that someone have removed the bluetooth module from under my passengers seat, before I bought it. Everything else is still there, the wiring and mic. Can anyone tell me what part number modules will fit my car?
I also have the holder for separate tochscreen bluetooth thingi on the dash. I don't have that also.
But is it possible if I get new enough bluetooth module under my seat then I won't need that separate thingi?
I don't need the ability to listen music from phone.
I hope you guys understand what I mean.

CAN: 3C0 907 530 C

Thanks!