So I bought some front rotors from another forum member. I was cleaning them up and I noticed the vanes in both front rotors go the same direction. They are supposed to be installed where the vanes are expelling air and not scooping air. With them both going the same direction, one will have to be installed backward. Will this cause problems?

 

Looks like I just found my answer from an old post by Jessejamessrt. Apparently some manufacturers send the same direction for both sides.