I've read several other threads about converting XM radios to Sirius by adding a couple of Sirius modules and removing the XM module. I have a lifetime subscription to Sirius, and I'd really like to work with my existing head unit, if possible. However, some say in the other threads that a 2010 radio is not convertable to Sirius. Can anyone confirm whether this is true? I have the non-nav, non-JBL radio with handsfree Bluetooth.