There is a pleasant fellow names Jose Cardona. He has a '47 A7 as well. I believe he had a spare engine. He took it apart because he needed other parts and the crankshaft didn't interest him. It's the only one I've seen that doesn't look like it's been sitting in a wet barnyard for a decade.
Frankly, there are a few other bits I'll ask him about. Oil lines and such.
Are you in the hunt for long stroke parts?