Bought 2 boats from the states & it worked out very well & also bought the odd item off eBay but not sure how good it would be to buy an engine unseen it's not like you can send it back
Would also need to check on shipping cost & import duty/vat
Big gamble I would say,I bought 3 Yam 55 coil packs from USA 1 worked but wasn't off a 55 and the other two didn't work at all.plus I had to pay import duty.
I know the early ones that came into Aus caused a bit of a stir with local importers. They were bagged as grey imports and not given the US -Aus networking diagnostics conversions from the US to other countries, not sure if there has been a way around this or you have to go by the old way of servicing and diagnosing problems (keep replacing bits)