I have contacted that guy (VVieri) in the past to ask about another project he did. I happened to find a page describing it online (much like the linked one above), and at the bottom of the page was a email address. So I sent a message, not expecting a reply (the web content was very old). But to my surprise he responded and we exchanged several messages. Nice guy, knowledgeable, and his English is quite good. So if anyone is really interested in this, try contacting him for additional details (I agree, some of it isn't quite clear just how it was done).
I also wonder what the quality of that Lada LSD is. But I've purchased other products from the same source and it was very good for the price. Plus they have excellent customer service. Shipping from Russia might be a bit costly for a heavy object lie a LSD. If you add it to the shopping cart you will find out what the shipping cost will be.