http://www.steelsoldiers.com/showthread.php?148480-Warn-standard-Hubs-on-Dana-60-M1008
Above link should get you in the ballpark on the locking hubs.
Something else. I have rebuilt two Dana 60 front ends. Upon teardown both had damage on the bearing surface of the outer stub shafts. It seems like crud enters the hub through the seals on the stub shaft. It goes through the seals, through a roller bearing that supports the inner stub shaft, then through the spindle into the locking hub assembly, then into your wheel bearings. In my experience if you have contamination in the locking hubs(or even if you don't, it is 30 years old), you should pull it all the way down to the knuckles and check the stub shaft support bearings. You may even need to replace your stub shafts, as the grease can wash out so badly that the bearings beat up the shaft, and then it corrodes when parked. You can end up with a stub shaft that has a bearing surface that looks like a minature railroad track from the roller bearings sitting in one place corroding.
If you do decide to pull it apart the only special tools you will need is a small press (if you change bearings) and a spindle nut socket. The socket you need will be 2 9/16" OD with four "teeth". You should be able to get one at your favorite online retailer or local auto parts store.