'71 Dart GT Lug Nuts, LH Threads?

Does my '71 Dart GT have LH threads on the lug nuts? When was the last year for LH lug nut threads? I remember my '69 Satelite had LH lug nut threads, but do not remember when Ma Mopar went all RH.

I believe they should be 7/16" X 20 X 3/4" for my 14" X 5 1/2" small bolt pattern Rallye wheels. Correct?
I'm pretty sure 1970 was the last production year for a car with DS LH threaded wheel studs