I have a Yanmar 3GM30F with a Kanzaki KM2P gearbox. i am currently looking for a replacement for my KM2P gearbox with a 2.21 gear ratio, but it has been discontinued. The current model is KM2P-1. However I have been asking my Yanmar dealer if this will work for me. So far they could not confirm. Any help will be greatly appreciate. Thanks,