Control arms

I read somewhere that the pivot pins at the lower arm bushing differ. One slightly longer than the other. I never layed them side by side for comparison.
Does this mean the lower arms differ in width? I can't testify to that either.
If you research strut rod bushing comments you'll find some have no problem installing those while others have a heck of a battle there.
My best advise is reuse the lower arms and pivot pins that acompany your K frame.