Good day, here is a good condition Mercruiser 4.3L Alpha One Out Drive complete with prop for $800 dollars. It was originally paired with a Gen 1 4.3L Mercruiser in a Glastron Sierra. I am unsure of what ratio it is. If you have any questions about the out drive or if you would like to come & see it then email me & I will get back to you at my earliest convenience.