Oh yeah, I forgot about the pump alingment tool...add that to the list of things needed. As I showed in the link above, you just need a couple of hose clamps. Easy and cheap.
Another tool which I needed and remembered as I posted in another thread, was teflon bushing resizers. Again I used small hose clamps lined with a wide zip-tie cut to length so that as you compress the seal, the ends of the zip-tie come together and form a perfect circle, but do not overlap, and shrink the seal. Easy and dirt cheap too.
As far as bushing tools, I did buy just a cheap set from the local cheap tool store, Princess Auto, but didn't use them as I really didn't have to change many of the bushings. I only changed one internally that had lots of play, and then I changed the tail shaft and pump bushings. The others were fine.
For the ones I did change, I needed larger sizes than the ones that came in my cheap tool set, and for those I used the the flat side of bearing race drivers, which were the right size and often are sold as dual purpose race/bushing drivers.
As well, not really a tool, but a good idea non the less...build yourself an extra deep trans fluid pan and custom sump for cheap too:
http://www.turbobuick.com/forums/showthread.php?t=159538