there are many peeps at mp3car.com, they have a store with 1 DIN motorised touchscreens.

As do Cardomain.com

Then get freedrive (free) and Destinator 3.0 maps (not free) and the GPS SW is excellent, tremendous, truly better than the Alpine CD-ROM I replaced.
A demo map is in the download.
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Empeg V2 60GB running v3 (alpha 11) and the autoupdated hijack from jemplode.