Lug nut pattern on A Body Darts

Changeover happened in '71. After that they were all RH thread regardless of pattern or lug size. '68 should be RH/LH but 1968 was a loooong time ago. Plenty of time for some kid at the local shop to blast the lh'ers with an impact in the wrong direction, forcing their replacement.

TSB from Chrysler/Imperial/Plymouth. I suspect Dodge was the same.
http://www.hamtramck-historical.com/images/TSBs/1971/71-22-1.jpg