Thanks for the replies. I have to admit that I don't know if the best system would be to use say a 'normal' spring with air shocks, airbags and a 'normal' shock absorber, or both air bags and air shocks.

I do know that I'm not looking for a slammed XF. However, i would want to be able to adjust the height/pressure. Along with the mounting brackets, figuring out which air bags are 'best' along with air shocks - I could assume it would be a forever fiddle to get the pressures right. As in bags to shocks, front to back., along with the brackets.

I have an out of state friend who occasionally visits and last two rental cars were middle of the road Korean ones and were extremely quiet inside and the suspensions didn't bang going over rough freeway patches.

And it is possible that my particular XF is not the norm, comfort and quiet wise. If anyone has what they consider as being a comfortable and quiet XF, I'm two miles from the 210 and 605 intersection.

I'm not saying I'm old but I do wear hearing aids. One downside is that they're extremely sensitive to any type of rushing air - fans, inside 'leaky' cars, etc.

Biba

I can't remember where I ran across these shocks but they sure look cool.