Don't really know much about Sankyo decks, but they did make mechanisms for Nakamichi. The only cassette decks I would consider have 3 heads. If it has 3 heads and it sounds good, I would consider it. I just saw a working Nakamichi Dragon sell for $6k used. My brothers Nak 700 sold for $350 to a guy in Russia, in not working condition. Remember old cassette decks need TLC, could be expensive to service. I could not find parts for my brothers deck, so that's why it was sold.