My '04 X5 has BMW Assist/Premium Package/Etc all installed in it, if I was wanting to get a Bluetooth module to install, what are my options? I do NOT want to loose my BMW Assist capabilities. I assume after '04 (or even later in the year from my understanding) BMW came up with a way to allow BMW Assist and Bluetooth to coexist, what would I need to do this now and how much would it run me?

Thanks so much!!