I bought one like that from a guy who worked at Jack Roush Racing. He rescued it from the scrap pile, he had a Venture and they had bought the engine to disassemble it to see how Yamaha had engineered it. They had a contract to develop a prototype V-twin engine, and were looking at 'best practices' among other manufacturers. When they were done, it was going to the recycle bin but it was offered to him, I heard about him having it and picked it up when he decided he could use the $ better than the spare parts. And like Sean said, I've got it to swap a bad-rod VMax engine's parts to.