Replacing Shocks on 2002 Lincoln Navigator

I am considering replacing the shocks on my Navigator. Is there any thing I should be concerned with.

Asked by for the 2002 Lincoln Navigator
The front are straight forward tube type shocks that go through the front suspension coil springs, little disassemble is required that involves anything but the shocks themselves, about 1 hour work for both sides, rear are also tube style shocks and go from the rear axle to the chassis, very simple to install, (under an hour both sides rear).
2 answers 2 comments
I believe you have air shocks in the rear. If they are not leaking, don't replace them.
You have air springs in the rear. Unless you are having a problem with you rear load leveling Don't touch the rear.
I WANT TO CHANGE MY AIR RIDE TO SHOCKS BECAME THEY ARE DOWN.