1957 mercury rear end housing

[kickinchickin]

Does anyone know if a 1957 mercury 9" rear end housing is the same width as a 1957 ford 9"?Thanks, David

 

[Oldmics]

Same width.

Perchs may be different depending upon your application and Merc rears have the larger axles and bearings.

Oldmics

 

[Ford blue blood]

And the bolt pattern is 5 on 5.