Unused!! Overdrive transmission. I got it when I bought a boat . Don't know much about it. Except that he paid $4500 and it's been sitting on a shelf since I think it's 1/1 then .75/1 after that $1,000. 727-243-2219. Please calls only. https://cimg2.ibsrv.net/gimg/www.off...86aa30e90c.jpg