You could of course, set up the two scenarios in something like X-Plane Fight Sim, which includes P-factor in its aerodynamic model... to see if you can measure/sense the difference between two clockwise or anti-clockwise props.. Austin Meyer, the author might take that on for a lot less than swapping two engines over!
NB. Having the downgoing blade nearest the fuselage seems to make sense from a Vmca perspective...