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The only thing I can add, is that along with the input shaft, you need to swap the reaction support since the passages are different. This is the part that covers the pump gears on the inside of the transmission.
See the attached pic
The reaction shafts are the same EXCEPT for that third ball. It can be removed though with a pointed carbide burr and a bent tipped punch. If I can do it, you can too. A 904 is the same too, remove the ball and you have a late, two ring input shaft reaction shaft. If you don't remove it though you'll end up with a blue torque converter.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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