I have found that only about 60% of the Delphi/denso units will work with the burned nav disc (either 3.0 or 4.1). The lasers in some of the units are just not good enough and will error out all the time. If you are considering the oem unit, just be sure to get the right one for your truck (lux or non), and you will likely need to have a dealer program it for your truck with the Tech II once it has been installed. Mounting the antenna is cake. You may want to look at some aftermarket units as well as they will offer a far greater range of options and possibly cost less than the oem.
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\'05 Slate Blue Sut w/ Magnusun, JBA headers, custom exhaust, 22\" MC2 RT5 wheels, Pioneer AVIC Z1 nav, Passport SRX, Vizualogic A1000 dual, bi xenons, fog xenons, dual optimas, and just gettin\' started!
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