I just pulled off my trailing arms. I knew they were different because one has the ball mount for the sway bar. I took out the trailing arm bushings and they are also slightly different. One (I think the sway bar one) has slightly larger metal end caps whatever you call them and larger bushings. Just want to make sure they will both accept the same Elephant monoballs. I think it should be alright since Elephant lists those same monoballs for all 65-89

Thanks