Gary, by the time you get hold of some ten CM lights you have defeated the object of buying the touratech Jobbie. Sell it to someone in Europe. Then buy somelights and a sheet of aluminium and make your own.
Someone on this site did this last year (Gutsi maybe) so look it up and see how little money it cost him.
I have also the TT lights and to be honest they are better than the OE but not enough to make them worth buying. They do of course make the bike look nicer IMHO