drum spindle help

[B's Nova]

I'm in the process of attaching the spindle to the control arms and I just realized I forgot which spindle goes on which side. I removed them completely to clean and paint them. They look like they can go on either side but I wanted to make sure before I attach them to the ball joints as I don't want to risk tearing the boots on them if I find out they are directional.

This is for my 73 nova which is using a drum spindle. Any assitance would be greatly appreciated.