I have a used Auburn posi and Richmond 3.73 gears for sale. It is from a 26 spline 7.5" 10 bolt. Lightly used, never at the drag strip. Slight cosmetic flaws on the edge of 1 or 2 teeth in the ring gear but seems to be fine. I will ship at buyers expense. Posi alone is $500 new. Any questions please ask happy to help!

Thanks for looking