there's a possibility your parents not really bottomed the car out, but kept hitting a particular dip in the road bending both sides.
but if it's just bushings... checking bushings is like checking a chicks ass out.. if it's good, you'll know. ;]
i've seen 40 year old cars with original bushings. the car was a little 'boaty' but it rode fine.
edit: no, the orange thing is your upper balljoint. the control arm bushing are the two bushings at the other end with the threaded studs coming up from them. there's two.