Either way you are changing how the game was originally placed on the screen. It was off center on the real system. Hardware was good/bad at that in the early days. (You’ll notice the radar isn’t round, after cropping it should be.)
Might as well make it as good looking as you can. Just use regular cropping on the left side.
Negative cropping was removed in the new shader, it had an unacceptable effect on performance.