(I'll get flak for that) LOL. Good natured flak only, from me.
Comparing a 9" to a 60, it depends a great deal on what's inside, or done, to the 9". ALL car Dana 60s are strong. Good clutch suregrip, 35 spline axles most of the time (the 23s and 30s aren't bad). Giant r&p.
I'd put my nines up against a Dana, but there's LOTS of good aftermarket parts in them. I would NOT put a gray iron center, weak stock Ford posi, 28 spline axles, in the same strength universe as a Dana 60. Maybe not even as good as an 8 3/4.
(My nines have strange 33 spline axles and spool, rear brace, nodular case and pinion support, billet yoke, and jfz disc brakes. I think the only Ford part is the narrowed housings.)
