This 409 looks a good example
Bristol 409 For Sale, classic cars for sale uk (Car: advert number 134433) | Classic Cars For Sale
I don't understand why importing is not an option as the costs are not so high ?
I think that Marcus was quite precise with his requirements and this indicated a price range. I think if you indicated what condition and price range is acceptable, more responses may come.
Are you stuck on a 409 ? or would a 408 , 410 , 411 S1 be acceptable ?
As there are only 4 or 5 409's in the USA it's hardly surprising that you are having trouble finding one.
A cash buyer in Europe is always welcome :-)