Yeah, you'll need a bearing puller to get the differential bearings off the carrier. Similar to THIS. Also either a press or a 3-jaw puller.

Why did you mark the bolts? Their position isn't critical.

Question: If that spider gear you found on the bottom of the case wasn't split in two, how did it come out since the shaft was intact?

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.