TF 727 Guru?

OMG! That makes it look like it's all one shaft! But the front shaft is in the forward drum above it over on the left; first part in the second row down. Ouch and only three directs! The front planet is first in the third row down. Its internal splines must match the front splines on the output shaft. This illustration shows only three planetaries on both gearsets. Many had four.