Dana 70 3:07 rear end rebuild info
 

I'd like some information on the rebuild process can anyone send me a link on a step by step

The process is the same for Dana 60, 70, and 80 rears... just the sizes of the parts change.

There's Spicer manuals here:
http://media.spicerparts.com/media

Also look at youtube videos. The ones by Carl of Jantz Engineering are especially good, (although their focus goes beyond a basic rebuild).