Where is the GPS antenna on the Escort-Passport-9500ix-Radar-Detector-p/9500ix.htm">9500ix? How much of the unit needs to be under the windshield? I want it as high on the windshield as I can get it. Will the mount block the pickup in any way? I am thinking of putting a small aluminum piece on the suction cup mount and use velcro for the mount. Will this be a problem with GPS pickup?