I am going to install in a 2005 325cic without assist and I am going to buy a Verizon Treo 650.

Looks like I can go one of 2 routes to do this retrofit; but only the route utilizing the 114 Assist/BT unit will allow full compatibility with a Treo 650. Can someone confirm this is correct?

It would be a lot cheaper to just by a 552 or 268 ULF plus the install kit; but this doesn't seem to work, right?