is the key to your solution..
Have a look at http://www.miniacs.de/mini-net/haendler.php were you can find a list of dealers
http://www.mini-drive.de
http://www.minimotorsport.de
have a rather good internet platform with pictures and prices and have quite an amount of parts on stock ....
minimania and kestel are well equiped but have no internet platform
use the search function (SUCHE) and Händler .. and you will find quite a bit more informations
obviously .. i was too slow
Cheers Lüdder
by the way .. not every mini is a cooper ... and all dealers have parts for minis as well a s for mini coopers