I posted here a few weeks ago about a parts list for rebuilding my rear end. I had the passenger side axle seal leak on my first drive out after completely finishing my front end (minus cracking into the axle housing). To my wife's dismay, I went ahead and took the entire rear end apart. As of now, I have the leaf springs cleaned up and painted with new poly bushings. I'm still waiting on new rear shackles that are supposed to be in today from ORD.
This morning, I started on taking apart the axle housing. Take a look at what's left of the pinion shim and the inner pinion bearing. I don't know how this thing wasn't making a ton of noise going down the road - keep in mind, I only tore this apart because I wanted to, not because I thought i needed to... but now I'm glad as hell I did!
Edit - Sorry, I don't know why the pictures are so gigantic