Having said that, I have no knowledge of the ancestry of the box (there are a plethora of ratio options, probably more than any other gearbox available) nor do I know exactly how the shift extension was modded to fit the Dolomite (which could affect shift precision)
It came from a Sierra 1800 turbo diesel Steve.
This version of a type 9 has the lowest first gear option.
Fifth gear isn't inside the gearbox casing, rather it is in the tailshaft housing so it gets noisier when fifth is selected
but having said that, it is less noisey than the three rail gearbox was.
It is filled with semi synthetic oil.
The gear lever is homemade (because the Sierra one wasn't practical - too far forward).
The selector rod is shortened, is all.
When I got the gearbox I did notice that the gear lever didn't return to neutral, unlike the only other T9 equipped car
I had driven (which was an 1800 petrol Sierra) but didn't think it mattered that much?
You can get "short shift" adapters for a T9 but I haven't tried one.