the reality is it only fits the z22se engine and has no trigger wheel, so will need a standalone ecu. Thus it has a limited market.
However the person who took it will stick it on ebay at some point, because they are stupid.
Plus the fact there are probably less than twenty in the entire world means it will stand out like a sore thumb when they do try and sell it, especially in the UK as nobody has one.
I will be checking ebay.com and ebay euro sites for it until it turns up, if that takes ten years so be it.