Welcome to the forum.
The thing about the V6 is at this point in time Companies like ARB are still working on a Bullbar.
Due to the position of the intercooler they are having trouble making sure there is enough airflow to it, so the bar will most likely end up with some sort of grill section. This will also mean that fitting a winch may prove very difficult if not a no go altogether.
The D22 is a great unit and will give you more room then the Zook, but it is smaller then the D40, so you might look at the ST D40 which is actually last years STX, both the ST D40 and the D22 run the YD2.5 motor. The D40 has an extra 40kw or there abouts of power wich is done by using a different head, turbo, and ECU.
Straight out of the box the D22 has more ground clearance and a slightly shorter wheel base
giving it better ramp over, approach and departure angles.
But if your looking for Max space and power the D40 is the winner there.
At the end of the day it will fully depend on what it is you want, as both ute are totally different beasts.