Dave-
I matched up the blade with my pic, the blades are cupped down, away from the camera. (Despite the blade at the 9 o'clock position appears to be cupped up, it's not).
I then matched it up to this pic from before I had my new radiator installed...It's definitely cupped toward the engine so theoretically, this is the factory position.
So if yours is now cupped toward the front, I believe it's backwards.
This is other side, cupped toward camera, which is facing the engine.
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