A LOP of 13 3/8" is indeed rather short & bbls just over 27" would give a high likelyhood of having been cut. With them still touching though I bet they started as 28". Someone may have dented in the muzzles & cut just enought to clean it up. When you look at it again, tell us a little more about it. That push-buton forend release is more common on the earlier ones though they do show up on later ones as well. See what the SN is & if it has a hook under the bbls engaging another in the frame or just a single hook in the frame lifted by pin through the slotted bbl lug.
Don't recall having ever seen a Lefever marked with an E after the grade for ejector, though they are normally referred to in this manner as FE for this one.