What kind of LCA do you have on the right, in your picture, anyway?
That looks like a heavily modified control arm, for a custom modification.
What are you up to, doing?
Look for letters on the front of the control arms.
If you see letters VL they are A body arms.
If you see letters PD, and even RW, they are B and E body LCA's, which are all the same thing.
Yes, the "shafts" or "pivit pins" (whatever you personally call them) are different between the A bodys, and the B and E bodys.
A bodys are shorter, and a smaller diameter.
