12" Z bars. Credit really belongs to Dawg Hamilton for doing it first.
I just ordered a 3" lift from club member Jackyl. My handlebar and riser setup is very similar to yours, have you had any trouble with them hitting the tank when you turn it all the way? Signals are long relocated so I'm not worried about that, just with the bars.
Wow splatttttt....bringin an old one back to life here!!!..LOL......and your right, my new bars on the Rocker have made it so much better on my back, only 2" lower and 2" more pull back, but it made a huge difference!!!