[Yoda]

"But it is always a Left Arm Stroke unless the Right Elbow replaces the Left Shoulder as the center of the Clubhead Arc. (10-3-K)"

Are left arm strokes swinging and right arm strokes hitting? Since the low point will be directly below the center of the arc wouldn't a right arm stroke require the ball futher back since the right elbow is further back than the left shoulder?

As you have quoted, all Strokes are classified as Left Arm Strokes unless the Right Elbow replaces the Left Shoulder as the Center of the Clubhead Arc(1-F). This would be the case, for example, with The Bat Minor Basic Stroke (10-3-K).

The Left Arm itself can only Swing -- it cannot Drive. However, the Left Arm can be driven -- Powered -- by the Right Arm. A Left Arm Stroke that is Powered by the Pull of Centrifugal Force -- usually the result of the Right Shoulder Turn Thrust (6-B-4-A) per 2-M-4 -- is Swinging. The Left Arm Stroke that is Powered by the Pushing of Muscular Thrust -- by the Driving Right Arm (6-B-1-A) -- is Hitting.

So, the Left Arm can only Pull (Swing). The Right Arm, however, can either Push (Hit) or Pull (Swing). While the Right Arm Hit is by far the more common, the Right Arm Swing is The Bat used with loosened Wrists per 7-19.

Regarding Ball Placement, for any given Line of Compression (2-C-0), all Strokes -- Left Arm or Right Arm and Swinging or Hitting -- have the same Impact Geometry (Preface), i.e., identical Impact Alignments per 2-J-1. Ball Location will agree with that Geometry and the amount of Hook-Face built into the Club.