I believe the owner is the guy who had long post on E39 M5 forum. He basically bought M5 and after bringing it home, realized that there was serious issue with the block. The post is full of great pictures and my impression of the guy is the one of great skills and willingness to help others.

I don't have personal experience but I have feeling that he'd be excellent choice for somebody needing new transfer case or something else.

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2010 BMW M6 * Black Saphire Metallic * Full Black Merino Leather
2019 BMW X3 M40i * Alpine White * Mocha Leather