Rear end noise

Since I put my Fury for sale I thought I would take care of the only small issue I am aware of.
I have 8 3/4 742 rear with 3.55 gears. I have been wanting to install 3.23 set, which I do have.
I have been facing a gear noise usually when coasting to a stop, it could be heard at slower speeds and definitely sounded like gear noise. No noise on heavy or light acceleration.
At highway speeds it was also noticeable, more like a rhythmic growl (not very loud).
It has been doing it since I...

Rear end noise
Author: Superfragl