35-spline spool with bearings

I THINK this is for a Ford 9-inch, but use your own best judgement: it's 35-spline and it comes with bearings and races on both ends. I've had this thing for a long time and don't remember where it came from or exactly what it fits. I'll answer any questions and take any measurements/pics you want to see. Shipping on your dime and I can get shipping quotes for you. Fire away!