Moses, while 'best' is a very relative terms I will contact Harald Julicher in Germany (automann@freenet.de) if you want to go thru all the fun regarding import, customs, etc. your other 'safe' bet will be Steve Timmins (
www.instant-g.com or
timmins@udel.edu).
I'm sure that many more people deal with Euro engines.. this are the two I know.
Good luck.