From what I can see, it looks good. You can't see some of the potential ussies until it's torn into, though. The synchronizer cones in the drum are one wear area to look at. Another that is specific to the overdrive is the blocker ring (
part #13), which must have the proper tension to allow the overdrive to work properly. Neither part are avaialbe new, bbut sometimes NOS parts do show up on ebay from time to time.