The origins of those pictures are my bedroom, i own the tach. It came wth my car. As you know it currently has autometer gauges in it, however i also go tthe original gauges. This tach came out of a Tiger racer. As for revving to 8K… well the tach in my car currently goes to 10.. though i have only made it half way round the dial.. an that was plenty fast enough 🙂