I got my UG with the standard back clip that it comes with, no extra bracket fee. Then went to Menards and got a 90* angle bracket thing, it slides perfectly into the back of the UG clip. Secure, still able to use the buttons, can screw it in or glue it on, whatever. And very cheap.
As for mounting, in the Grand Am it's above the radio on the flat spot in front of the twin vents. Works great, and it allows me to 'teach' the ladyfriend as we drive what effects MPG. She's learning....
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