Best Years for the 318 LA?

Wonder what that actually meant? Another mopar mystery. I'm beginning to think the entire mopar division was run while being high on acid. Hence the trippy info. Weird build codes. Fun colors. Lol. You name it. They did it.
Mound Road was the specific plant it was produced. I've owned them and found nothing different... LOL. I've never lost a 318 in fact