I'm not selling this but I came across it on ebay. I wish I could afford it right now as I don't have it, but with xmas coming up It's not in my budget but maybe it is for someone else here. http://cgi.ebay.com/ebaymotors/2004...004QQitemZ140189044189QQrdZ1QQsspagenameZWD4V
don't you need a gyro too so the nav can measure vehicle speed (esp. for tracking inside a tunnel or what-have-you) plus $700 gets a really really nice portable GPS OR You can save it towards the Garmin Black Box GPS system which integrates into your MFD anyway.