Would you be better getting the engine from another LHD country than getting one set up for rhd and trying to adapt bets to fit?
The 3.2l are really nice,but sound tractorish compared to the 4m40. You would most likely need yo get a half cut to get the swap done right, it would save a lot of time. Auto is the way forward,the manual gearboxes get crunchy and the duakmass flywheel is an expensive to replace time bomb.
I think the 200hp model came in either 08 or 2010 and feels super powerful and it is really driveable too. Not sure would you save enough fuel with the diesel compared to the petrol to make the conversion pay for its self