A dial indicator
A decent selection of sockets
BIG Sockets (I forget the exact size for the '60/10.25, but get they are each different)
I use a slide hammer to get the diffs out
large bearing seperator
A slide caliper (I have a $20 digital one I got from Kragen)
And as was said, someone who knows what they are doing to help you. There is an excellent guide on Pirate in the Tech article section. Randy's Ring and Pinion also has a decent guide on their website.