If in the Southern Hemisphere, it goes without saying that you should use the right magneto instead.
No need, magnetos sold in the southern hemisphere have had their labeling swapped around so L = R anyway. CASA mandated that all Ls are Rs so that trans hemispherical alignment of cross pollinated rules infusion could occur. This is to avoid confusion when preforming shut downs and mid flight toilet breaks. The only issue is when you cross the Andes backwards flying the pacific route to Australia in a Canadian modified rig then you have to consider what you said carefully.
Of course, that's just for the injected 360. In the case of the carby version, you add 3.72% to all those numbers and the singing is instead of the last three lines of "Does Your Chewing Gum Lose Its Flavour On The Bedpost Overnight?"
Don't forget to modify the inverse landing distance by 3 as per CASA holiday choir rules chapter 12.3. I had heard the designer of the O-360 was Sino-Austrian-Cherokee of decent, so singing "Botswanan Lullabies" might be more appropriate.