Hey there! Welcome to forum!
I am guessing that you have the 4.3 touchscreen? I believe there are a couple links to purchase the 8.4, however it is pricy - around $2000... And that doesn't include the VC and BT. Unfortuantely for the 2011's there is no way to add the BT capability yet to our Journey's... Hopefully Dodge/Mopar will release something similar to what is available for the older models, but at this time, nothing