I just did this about a month ago. It is very easy over all but the drives side front is a bit of a PITA with the hard lines that run there.
For the fronts- Loosen the top nut on the shock while it ia still in the truck (made this mistake first). Remove the bolt at the bolt of the shock. Remove the three nuts that hold the tower to the frame. This is most easily done with a long extention and a swivel. Two are accessable from the wheelwell. Pull the whole tower and shock out the top. It will take some maneovering to get the drives side out. Install is reverse. Install the shock in the tower and then bottome bolt then the tower.
in the Rear- it is just two bolts top and bottom. The passengers side bottom on mine was blocked by the sway bar so I unbolted the sway bar from the axle and reinstalled the bolt onthe bottom of the shock the other direction so it will be easier the next time. Other than that it is straight forward. Top bolts have self holding nuts so make sure you turn the bolt.
It is straight forward with those little issues that I ran into. The torque specs were given to me in another thread.
Good luck you will love them
Ted