There were some posts a while ago with suggestions of where to look to get a 4.10 pumpkin. I understand that one of them was a business that seems to have some in stock. Otherwise you end up in a searching mode for a long time.
Since it hasn't been mentioned, it is sometimes referred to as a "pumpkin". That is becuase the differential assembly attaches through the front of the housing and has a general shape resmbling a pumpkin when it is removed.
