Go to the transmission supply house on Irving Blvd. on west side of town, they will have manuals there, you're asking for a 500 page book and why no responses. Where I got all my ATX parts from.................they sell over the counter to walk in customers and to ATX rebuilders and trans shops all over Dallas. Parts will be far cheaper there than even online. Even have a big supply of used as well.
Enough trouble simply getting it out, this trans often tears up even in the hands of competent rebuilders, it's not one of the easy ones to get right. Untrained you have a snowballs' chance in h-ll of getting it.