I have a friend who is currently going to school in Germany...i don't think she'd have any trouble picking up the Holy Trilogy & sending it to me in order to get this off the ground.
She's also fluent in German & a SW nerd (like the rest of us here) & could probably give a listen to the German audio track, and tell us if/how it differs from the american version.
e-mail me off-list if you wish to discuss this further
Devilman1369@gmail.com