Just unscrew them where you see the screws, and then with the rivets you can either pry them off with a flathead screwdriver, or just pull them off, but you'll have to pull pretty hard. I just pryed them with a flathead and they came right off. Very easy to do. Go try it.
let me know how the donahoe lift goes. I did mine friday night after i got my new truck home and only got 1/2" lift when the coil was "factory set at 2" ". I went down to donahoe factory and they seemed to think that my 06 lb sport was higher from the factory than usual. they cranked them up to give me a little over 2" of lift, but the ride is really stiff now. i may go back down to 1" of lift and remove the aal on the rear so the ride will be better. I am running 265-70-17 revos on the factory rims that were chromed. please keep in touch.