Inspection of a 904 torqueflite
I cannot recommend the books
@VOETOM said to get enough, especially his. You will not regret getting all of those. That way, instead of possibly being steered wrong by people on a forum with terrible attitudes, you can read it for yourself in black and white from a known authority on the torqueflite transmissions. Tom himself wrote this article for Allpar.
Tom Hand's guide to the Chrysler torqueflite automatic transmission
We are very fortunate to have him onboard here and willing to help. I think you are doing fine. I'm glad to see you tearing into it. A lot of people wouldn't have the guts to do it. You can put a notch in your belt when you're done.