Any updates on the best way to integrate new iphone into Bentley system using the steering wheel for phone and music control?

 

My stereo guy recommended the GROM BT3 http://gromaudio.com/store/bt3_adapters/index.html to connect my iPhone into my 2005 CGT for about $400CDN. I thought about the Bentley Bluetooth uprgrade from Flying Parts for about $1200CDN, as well.

For now, I went with a used Nokia 3120 for telephony, and a GROM USB3 to replace the CD player with iPhone/USB stick.