Interesting as I was in Cuba in Feb/March and only saw one H-D. It also took 2 months for the cards we wrote to family the first day we were there to arrive in the U.K. The one we sent to the USA never did arrive.
Now Obama is going to open talks on the embargo I hope things improve for the Cubans who are a very nice race of people, I could see a problem with the postage of USA parts getting into the country at the present climate but when things are more open then I expect there will be a lot of Cuban ebayers.
That's a great website you have:
Cuban Harlistas - Home - The Art of Harley Davidson Maintenance in Cuba
Good luck.