I just ended up ordering mine from the UK (www.xcarlink.co.uk) because they were reasonable enough with pricing, and had all the information I wanted handy.

Bought with a Bluetooth module and just finished installing it. It's a pretty seamless install, and so far I really like it. I'll give it a proper try out tomorrow with some more A2DP streaming audio from my Bluetooth phone.

If anyone's interested, I took a lot of install photos?