I just installed an Audiovox Xpress EZ radio in my car that I got from XM radio. I used the vent mount for the radio itself. With the help of our forum I was able to determine where to mount the FM interface (it surface mounts to the rear hatch window where the antenna is located) The radio works great. Now all I need to do is route the wiring from the antenna and from the surface mount under the interior trim.