If you're planning on getting the MS3, here's a cool plate you could get for the front if you're into the whole JDM tag thing
http://cgi.ebay.com/MAZDA-3-MX3-323-JDM-JAPANESE-LICENSE-PLATE-TAG_W0QQitemZ260025153467QQihZ016QQcategoryZ50451QQrdZ1QQcmdZViewItem
http://cgi.ebay.com/MAZDA-3-MX3-323-JDM-JAPANESE-LICENSE-PLATE-TAG_W0QQitemZ260025153467QQihZ016QQcategoryZ50451QQrdZ1QQcmdZViewItem