Dana 60 S60 or Ford 9"

I don't have a direct factual or in depth answer for this, but another thing to consider is that the 9'' is lighter than the Dana 60 in stock form.
The one thing I will say though, is that in MHO, there's nothing that looks more badass under a Mopar than a Dana 60.
The same thing goes for a Gen 2 Hemi versus any BBC in any configuration other than say a Sonny's engine.
They are pretty equal, but the nod would go to the Hemi on just looks alone.........