Originally Posted by miamijim

The '74 catalog shows the PX10E with fancy Nervex lugs and Normandy hubs. The more upscale LE model did not have the fancy lugs or Normandy hubs.

In regards to fancy Nervex lugs, from '70-'74, I have no clue why some models have them and some dont. The exception is the '74 LE model which was intentionaly spec'd without them.