help with rear diff identification.

I have been told that and also been told it is a special 9 and a fraction size because the ribbing on the pumpkin....

That's a bunch of hooha. It's a 9". Although shortened like the demonic one pointed out. I didn't think I needed to add what a blind man could see. lol It is a good center section because of the ribs. They don't all have those. It does make it a little stronger.