Get a set of spring compression rods.
Jack up the frond end and remove the wheels.
Disconnect sway bar on one end.
Use the jack under one lower control arms and lift up to compress the spring.
Attach the spring compression rod and tighten them.
Use some rope or wire to secure the spring to the upper perch.
Lower the jack and push the lower perch up to expose the split ring.
Push the split ring up to the next groove.
At this time it is a good idea to spray things down with AMSOIL HD Metal Protector.
Rise the Jack and remove everything from the spring.
Lower the jack and repeat on the other site.
Reconnect the sway bar, mount the wheels, lower the truck, enjoy a beer and admire your work.