Best 9" rear housing donor?

[23firefly]

Any recomedations as to the best donor vehicle for a Big bearing 9" rear end?
Right now I have a Big bearing 9" out of a late 70's truck, it measures 60" "from inside wheel flange to inside wheel flange". By the way, whats the best place to measure from?

I know that my 1969 bronco has 58", logic tells me if I use my 60" I'll have to get longer axels. Is that true?

 

[Unregistered]

find a 76-77 bronco rearend & be done

 

[Unregistered]

Whats the features?

What are the features of a 76-77 bronco rear end?

 

[broncoswede61]

What are the features of a 76-77 bronco rear end?

I think '77 was the only year with a heavy duty big bearing housing(beefier around the pumpkin)