Can anyone post a pic of where the rear differential vent tube exits? I need to check it if it has one and I can't seem to follow the line all the way to the end. Did these require a new cap like the front vents? My front diff was never updated but I have that part on order now.

 

The front is easy. As far as I know, there is no upgrade for the rear one. I had heard there was at one point, but was never able to find any information on it. The vent tube on the rear is up inside the maze of tubing behind where the gas fill is. Just be sure it is connected, and not plugged.