I have had the USA spec installed for years and it works great. I was thinking to buy a bluetooth hands free adapter that could be plugged into the AUX input of the USA spec unit.

Has anyone tried this? Or has anyone had any handsfree units they would recommend? If the RCA aux input was viable, I was considering the DriveNTalk KlaT7 or KlaT8 (http://www.driventalks.com/new/eng/p...type-klat8.php)