The Kura Kage shaft is much lower trajectory than my other drivers, especially the Project X graphite shaft. It's not the head, it's the shaft.
I have mine set on the 12.5* setting to get a flight path similar to me 10.5* Project X 5.0 shafted driver.
I can only speak for the Covert Tour, but the head can alter ball flight and spin. Very much so.