all joking aside here guys how complicated would it be?

As I understand things one of the main issues with the engine swaps on the XF is the ECM controlling gearbox functions - surely it'd be easier to swap out Merc engine/box/ECM and insert the whole LS+tranny+ECM (ok there would likely be some transmission tunnel 'fettling' needed not to mention a custom prop). Ok I know that that is likely vastly simplified but if people swap LSx's into RX8s (which likely have even more electrical gubbins than we do......)