What are the differences between the 8 3/4 & the Dana 60?

I love the 8 3/4. When we were kids and poor, you could have a set of pumpkins with different gears for any purpose. 2.76 for long trips, 3.23's for everyday, and 4.86's for the track. Just an hour or less to swap. And plenty strong and trouble free below 500 ft lb of torque.