Thanks for the info,
The Posi unit alone was going to be 637.00 plus the rest of the parts for me. so with labor on the rear end over $2K , I also had eventual planned to upgrade the brakes which I bit the bullet and decided to do at the same time.

I no longer have the capability to rebuild the rear end on my own or to remove it on my own. Buy the way, the $2K did not count labor to remove