The Stovebolt Site Forums The Shop Area Driveline Replacing seals on my Torque tube.

Change the cork seal and shims here Picture 1 & Picture 2
Available Here and Here You will not use the smaller diameter seal on your truck that is used on the 1/2 ton trucks.
You could call http://nwtparts.com/ ask for John he may be able to sell you everything minus the smaller diameter seal.
You need the 4 hole shim gaskets not 6 hole.
Check illustration Group # 5.572 and 5.567

Shims and Seals info.