X2 on this. Unless you are doing a pristine resto back to factory original, you might want to consider just changing the rears out to RH thread for consistency. The list of members who have forgotten about the LH thread business and snapped one off trying to remove it by going the wrong way is endless. The same applies to the high school kid working at the tire store who never heard of LH thread studs. As you hear him hammer-hammer-hammer with the impact gun you try to get from the waiting room to the work area before he trashes the studs. Don't ask me how I know this please...
If you really want to replace the studs, try Rock Auto. They had some for my car (a twin to yours).
