Hi Peter -
Also remember there is a pretty good chance you will dick up the allen bolts that hold the differential housing together. This of course only applies if you don't have access to the special bearing puller tool for the side plate bearing races.
You can also avoid removing the allen screws of you do the safety wiring while the differential remains mounted in the housing (more limited access and constrained volume).
You should plan to remove / replace all of them (you can buy replacement allen screws at your local Ace hardware store).
You will also need the gasket set. Most of the vendors have them, including SACC and IPSCO (surprisingly!).
Rocky
The allen bolts I am talking about are the ones in this picture.... The light colored ones are stock - I replaced them with the black anodized ones shown. The object in picture is the top of the differential housing.
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