I know there are many tutorials and videos how to recognize 8 inch from 9 inch but more I watch more doubts I have.
I have flat part in the middle of the housing so it should be 8 inch, but also can't access 2 nuts so according to tutorials it's 9 inch.
Can you help me to identify?
It sits in Mustang 66 but I am not sure if it's original one or not.