I posted a DIY on how to install the New Rear Sway Bar in the 1 Gen Tundra Forum. I finished in the wee hours of the night last night so over the weekend I will be able to give you all actual road experience.
I should add that it works with the Firestone air bags that I have on my Tundra. This bar is attached towards the rear of the axle and the bags are on the front side of the axle.