@Evergreen One Speedster replica hardtops are really scarce.
I think it's safe to say that NO builder will have a hard top that perfectly fits right out of the shipping container. Anything you find will have to be modified in some way to fit your car, even if it's Vintage making a top for a Vintage. On top of that, the shipping and VAT coming from the USA will drive your cost up way beyond $3K USD
That said, you would be a lot better off to find a top in Europe and have it locally adjusted/altered/fitted to your car. I think that @Marshall has a top from a company in the Netherlands - Sounds a helluva lot closer than California, right? Maybe this thread will help you find a few sources closer that have something that can be modified to fit. Also, @Alan Merklin modified a hard top for someone a few years back and might be able to point you to his thread about what he had to do to get it to fit right.
Good hunting! (And what part of Germany are you in?)