Rear end width

[11secondgs]

I have a ford 9" made for my 72 Buick? Will it bolt up to my GN? Is it the right width? Are the brackets the same from my 72 Abody to 87 GN the same?

It is long 60 3/4"

Thanks,
Josh

 

[11secondgs]

Just read the 78-87 G body is 57-3/4" Hmm.