Elliot, thanks for info. I have been considering an aftermarket Nav system for my HCHII. The costco near me isnt carrying any GPS Nav systems at this time. I went to the local circuit city and found they carry the Cobra 4000 model which appears to be similar to the Cobra 4500, however it was too small to place in the location you described. Any chance you can post a digital photo showing how it looks mounted in that location?