Is it pretty straight forward? is the bar under any load or pressure?
Use a super lube like silicone grease or K-Y Jelly to lube the bushing and bar and just slide the new bushings into place. No tension on the bar with the ends disconnected.
Sway bar gets tension when body is twisting ( diff height againt LCAs ) or LCAs are moving unpaired, but parked on a flat surface sway bar is relaxed
rodger...was going to do front and rear