FYI, I just received a copy of the 727/904 book by Tom Hand and it looks like it's also a good reference for DIY work ==>
LINK HEREStill waiting for the spring compressor like 440Jim showed above to arrive...
I have the factory chrysler compressor ... which does double duty for pressing in the outer race of a rear sprag .... but in a pinch when rebuilding a power glide I made something out of a PVC pipe coupling that I was able to compress with a big C clamp we had at work.
That one that Jim shows would come in handy for many different types setups like that .