Absolutely.
I just shot-gunned all of my front suspension components in my 1990 SC -- new strut-rod bushings, new strut-rod-to-frame doughnuts, new endlinks, new lower control arm bushings and ball-joints, new upper control arm bushings and ball-joints.
The lower and upper control arms can be purchased with the bushings and ball-joints pre-installed -- MUCH easier and less time consuming to replace than traditional method of replacing individual ball-joints and bushings in old control arms.
Since the lower ball-joints must be separated from the spindle BEFORE you can replace the strut-rod bushings, it is wise to go ahead, since you have the strut-rods loose, to replace the strut-rod-to-frame doughnut-sized bushings at the same time -- doing so at a later time will entail breaking the lower ball-joints loose AGAIN, and chance damaging the lower ball-joint dust boots -- ask me how I know . . .
Cammer