Gary the T18 / T19 / NP435 have a removable bell housing unlike the ZF or M5OD transmissions.
So if the input shafts are the same, they are for the T18 & NP435, the T19 could have been swapped in.
Dave ----
My Bronco and my truck have 3.55’s. The four trucks I owned before these two were all 4.10’s.
I really like the 3.55’s over the 4.10’s. Less rpms and both motors have plenty of torque.
Drove the Bronco today on about a 400 mile round trip, with the E4OD at 70 MPH, IIRC, I was turning 2100 rpm.
I quit doing second gear starts unless I really had to get going, easier on the clutch IMHO.