It is not as simple as just saying one runs backwards . . . when you order a magneto for instance, you specify the rotation. The rotation influences the advance mechanisms, how the points are mounted (direction they face), where the lubrication pads are, etc.. So, in the end - the distributors/magnetos need to be designed/setup for the direction of rotation.
Just wanted to make sure you all think through the details - before you head down this path
