I have read in a few diferent places that the ratios are different and even in the video i posted the jap's at BMI state it has different ratios and demonstrates this in the mid part of the video, It's a long but good watch.
I am yet to find proof on paper though that the ratios are in fact different
Blueguy I do agree but if it only a minor difference in say maybe forth, would the builder have noticed?
Im determined to find something on paper whether it be the same or not