Hopefully this will help someone out in the future!
Front Diff Drain
9043024003
Rear Diff Drain
1215710010
Transfercase Drain
9043018008
Oil pan drain
9043012031
smartEDIT: After gravity did it's job getting the old fluid out I jacked up the driver's side rear wheel and spun it by hand with the trans in N :cowboy: This helped drain out another cup of old diff Fluid, just to be complete.
Yea I am. It took six quarts of 75w-90 to fill up the 2 diffs and transfer case.
No need to flush anything.