Thanks to Dave, I now know I've a mk3 headunit in the M. No phone kit, even though it has the phone button on the wheel and stereo. I really want an oem style Bluetooth install, and I'd like to get the Nav and TV working, just well, because. I must add, I'm an Android guy, and no interest in changing to iOS. Also I don't stream music, I'm happy with talk radio and CDs. I'm toying with the idea of a reversing camera too.
Installing isn't an issue, i fit a fair bit of similar stuff to motorhomes in work.

Thanks in advance.