The automatic that came with it made by JATCO, is very nice except for a few problems like the 1st gear lurch, cold start issues, pressure solenoid getting weird. Otherwise - its built to pull a freight train.
And if you dont own a heavy transmission jack - expect to engage 4 strong men to remove and replace it - 2 of the 4 will throw their backs..
Aah old sweet memories.. specially when idiots would damage the parking pawl of it which was in the transfer box..