12 bolt rear end rebuild

[samhart]

i had a 9 second mustang that i just sold. i thought long and hard on what my next project would be and i chose a 72 chevy truck. i bought a frame that came with a 12 bolt. i helped my friend rebuild his 9 inch, but obviously this is a whole different animal. i guess what i am getting at is i am not completely ignorant when it comes to rebuilding one, yet i would like to have some literature to be able to read through as i am doing it. i haven't even torn into this thing yet, but i know it is going to be alot different not being able to take out the pig and all. i haven't had too much luck locating any manuals, and was just wondering if anyone had any books that they would suggest, and where i can buy them. thanks