OFF TOPIC:
The Voith MK IV DMs are SBS883U, SBS884S, SBS885P, SBS886L,
SBS887J, SBS888G, SBS889D, SBS890Z, SBS891X, SBS892T, SBS893R,
SBS895K, SBS903X, SBS904T, SBS906M.
Add 905R, 897E. And I believe there's more of them.
890Z is not a voith. And if I recall correctly, so isn't
895K.
And furthermore quite a number of these Voith MKIVs are 4 speed.
So far confirmed ones include 886, 894, 903. From the slightly
different performance afforded by these 4 speed MKIVs compared to
the 3 speed ones, there's definitely more out there. The confirmed
ones are the ones that showed that last gear at speed.