OEM 3.23 gears, 8 ¾ w/489 case

I have a used OEM 3.23 ring and pinion set for sale. They are for the 8 ¾ 489 case. The wear pattern looks excellent and was removed to put in a set of 3.73 gears. I’d like to get $50 plus the $10.70 USPS medium flat rate box shipping.

Edison, NJ