Split monoleafs

I bought a set of split monoleafs for my 69 dart and was wondering if there is a left and right side, or does it matter? The left side lines up with the rear shackles,
the right side is about 3 inches towards the inside of the shackles.
Both leafs are marked Lf on the front and LR on the rear.
I may have a problem with the in frame box on the right side, but i hope not.
Thanks for your time; Rick

Maybe their both left springs but you need a different one for the right? Both say Lf &Lr (Lf= left front & Lr = left rear maybe)

the leafs should have a slight pitch or angle to them front to back....it kinda helps the rear steer when in a hard turn...