Used 4R70W modding ?

[ran260gt]

Thats for your guys help with helping find what was wrong with my GT 4R70W , so I found a 01 4R70W 30,000 , paid 400 for it , I opened it up tonight and it still has the yellow plug , so Im the first one to crack it open , I cleaned it up , removed the Valve Body , and 1-2 / 2-3 springs , when I get the blown trans out of my mustang I will swap out my drilled S/plate .

My ? is should I do anything to my new/used 4R70W , before I install it next week , maybe new accumulators or open her up replace something that does not need special tools to do ?
And is the 2001 converter stall different then the 2004 ?

Thanks for helping out a Mustang guy , as this site is the best for 4R70W info , the Auto Mustang is kind of like the black sheep on most Mustang forums , so not much info can be found out about the 4R70W !