Yup, what he said. Rears are simple.
When i do springs, i remove the rear swap bar. I put the read body on jackstands and support the center pumpkin with the jack. I then unbolt the quad shocks and main shocks (or in your case take the main shocks off). Then i put some blocks under one side of the axle and lower the other side down and you can take the spring out by hand. Jack the axle back up, put some blocks under that side and then lower the other side down and change the spring. Then jack the axle up even and rebolt the quad shocks on and then install the main shocks
1-2 hour job