“Toyota’s first (and only) mass-produced V12, this powerplant was conceived for the luxurious JDM Century with bombproof reliability and comfort in mind. Because of that, the 5.0-liter could only make a little under 300 hp in stock form, so a twin-turbo setup was devised.”
https://www.autoevolution.com/news/the-story-of-the-lambo-inspired-toyota-minivan-with-a-mid-mounted-twin-turbo-v12-181740.html