New replacement posi differiential for the 9 bolt and it's a drop in replacement!!! So if your cones are worn out or scored the case, this is your only alternative and are readily available.

New LSD posi carrier $750 plus shipping Includes eveything except install kit and ring and pinion gears
Additive Kit (must use) $65 plus shipping Includes posi additive and appropriate seals

The additive kit MUST be used as it has a special posi additive and new pinion seal, do not use a viton seal(which is what all the install kits have) as the additive will eat away the seal.

Contact me for any info or ordering.