Originally Posted by timothale
Ford used 3 different axle ends on the 9's My old speedway showed the difference sizes, dimensions or google it.
Glad that you pointed that out. Many folks aren't aware of that
There is also one more 'caveat' to consider and that's the amount of axle projection outside of the housing which also determines the bracket design. I found that even a couple of aftermarket suppliers had no clue, ECI, being one that blew me off when I talked to them about my '57 small bearing housing but Wilwood knew what to do
Another consideration to the three Ford bearings/axle housing ends is that usually
(not always) an aftermarket housing is built with the 'big'/late model Torino version.