/ Cabela’s LM36H Lower 3 Point Lift Arms #11
You're onto something and I think we have a winner here.I would say the left is the right one , just on the wrong side and should be flipped end for end. The right side is the wrong arm.
Definitely makes sense. Specially after I realized the equally spaced holes on the arms. These holes should be places towards the implement and not towards the tractor. The stabilizers will then use the hold furthest away from the tractor. While the remaining holes are for the side links, in case the OP needs more lifting power or more range of motion.