Interesting...that was 2008, now they have a different mounting bracket that moves the caliper up and the brake line is routed in a more normal way:
http://mz-faber.de/MZWeb/catalog.aspx?cat=9ab13b91-6665-43a3-acc2-4775b7e6c045&subcat=6bbdfeeb-6bf8-44f3-a37f-a4aef16751ec (click on the pic to see it properly.)
It seems to be a flat bracket that would be easy to get made - for less than e150, and motomaster components would be less expensive in USA. (International shipping from Germany is no way for me, Deutsche Bundespos international shipping was "privatised", done by DHL courier, too expensive.)
PS: I see there is also an adaptor needed to mount the rotor to the Baghira hub - e114.
This stuff all works out so expensive, you might as well leave the MZ as is, sell it and get a Yamaha XT 660 X, wouldn't cost any more.