LH threads

Just picked up my 72 Duster. I was told that all the wheels were LH threaded by previous owner. I have researched and have read that Mopar had stopped LH in 1971. I have also read that LH threads were only on the passenger side. I pose this thread to find out what is the real story is. I will be removing wheels tomorrow and going to go with the left handed thread previous owner told me. I will be using lug wrench so don't think I'll do any damage figuring it out. Thanks for any advice or knowledge in advance. 10
If you have 4 wheel drum brakes you may still have left hand.