What is the width of a 65 66 diff housing

[blue66tang]

I am narrowing a 9" housing and want ti to be a 1/4 narrower than my 65 66 housing. The problem is that my 8" rear is still in the car and its hard to get a good measure ment with it stilll put together. Thanks

 

[mdjay]

52.25"

 

[blue66tang]

Thanks. I now have a 9" rear narrowed to 51.75". Guess i will have to burn these tiers off so i can get bigger onese