Good question. When I rebuilt the tranny that's in the Duster right now (which is the factory original transmission), I installed a new torque convertor. I thought that if I ever had to use my backup tranny, I'd simply swap the converter to the replacement transmission. It's a really nice converter and works great, so I really have no use for the old one. Also, inside storage space is at a premium at my place. I couldn't find anyone that wanted the old converter, even for free. They all buy new converters for their rebuilds and aren't interested in putting in an older used one. Point well taken, though.