My understanding is that if they are new it does not matter left or right. Because they are not front to back sensitive when new. The problem is if you take them out and put them back in. I think of it as "coil set" once a spring has been used a certain way for a while it does not like to be bent back the other way. That is what ends happening if you take them out and put them in the opposite position.That is when you could have problems. You should be able to confirm that with companies that make replacement torsion bars.
