While swapping out the PRAM battery in my Wallstreet today, I yanked the 80GB hard drive and placed it in my external USB/Firewire enclosure. Since I had quacky problems with the FireWire connection when using my SSD before, I used the USB connection this time. Interestingly, all the data is there on the drive. I was able to back it up via SuperDuper to some SparseBundle Disk Image files. I then tested the speed using Intech's SpeedTools Utilities Pro "Test Data Transfer Integrity," set to 1 MB test for 5 minutes. The average READs were 32.8MB/s and average WRITEs were 27MB/s. This is quite similar to what I found when testing the SSD in the same enclosure.

You can see a photo of the 80GB drive here (which interestingly enough, is an Apple branded Fujitsu):

https://picasaweb.google.com/103365672326265854011/PowerBookG3WallstreetStuff#5687014212327182450