I have a question to V8 owners. I, personally, have V6, so I can't do this experiment. My question is how the vehicle rides over speed bumps with Rear Air Suspension when it is in "High" position compare to "Normal" position? This would means when you're extending rear shocks in "High". I've 2" rear lift which is approximately the same as you guys have when raising your rear, but my rear is very stiff and jumps like basketball over each speed bump and very hard in road holes. So if someone with rear Air Suspension can make this experiment, I'd appreciate any details of his ride experience. Could you put your rear in "High" position and try to go over speed bumps on a parking lot with approximately 10-15mph (normal speed on parking lots) and do the same in "Normal" position, and compare it? This should take not more then 5 minutes. The reason of it that looks like Toyota has different rear shocks and/or setups for V6 and V8. If you have "comfort" ride over speed bumps compare to "normal" position, this means that V8 shocks have longer travel.