$600 · 50's Chevrolet 3 speed transmission with Borg Warner OD

Last used / driven mid 90's. I'm not sure on exact year but will fit many years. There is a fair amount of info on internet about this type of unit. I used it in 54 Chev truck with 235 and recall it made a substantial difference in fuel usage. If price is too high let me know why as im open to reasonable offers. I bought trans in the 70's. It was a difficult unit to find at that time. Text works well for me.