I replaced the rear seals and bearings on my '55 last spring and didn't require anything special other than a brake drum puller. Although I didn't need a slide hammer I could see how a car that has seen limited maintenance over the years could use the extra "bump."
The only special tool needed for inspection is used to determine the bearing end play. There are a number of threads on here that demonstrate how to build one of these tools at home. I chose to use a dial indicator instead. Either way, it's not much of an obstacle to overcome.
I seem to recall the manual has a pretty good explanation of this service. Just remember to only pull one axle at a time so that the centering block in the differential stays put. Also, keep track of your shims as you go if you're keeping the existing roller bearings. If you're replacing them, you'll likely be starting from scratch in regards to end play so which side they came from isn't important.
-SG
Edit: You can find forum member JWL's inspection tool in this
thread. Also, if you find yourself needing to add shims, know that making your own is relatively easy. Just ask.
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