Im certainly not "qualified" to speak but.....
If you have spoken to the owner of the only one in Australia, one would think there aren't really too many answers to be given from here.
From what I can work out, the problem can be the hand of some components, IE the supercharger bracket suiteed to the N/A LHD cars, not EU RHD etc so it was perhaps a custom bracket.
Then the big one, tuning. That was what plagued the HPA turbo R32 for a while and gave it its bad reputation (unfortunately), you will need a guy to tune it properly for Australina climate and fuels. Our ECU's are different too (i believe)
As eluded to earlier, if this fella hasn't had any probs for 50k kms, follow his lead and you should be fine.
My 2c
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