Sorry for the late response on this thread, but I have talked to the guys at Sleeping Beauty and it will be interesting to see what they end up with. They are building 3 spyders - 2 for customers and one for one of the guys who works there. They wouldn't be able to get them street registered in Oz, but might have some luck through the 356 club on club plates. When they came down to Melb recently they showed me photos of the buck they have made and a heap of photos from a trip they made to the States last year. They have it on their website as a 1954 spyder, but that was a totally different shape with rear fins. This is what they have photos of for reference, but they are building the 1955 shape, which really confuses me, so for that kind of money you would want it pretty authentic!
For any spyder fans, you might want to check out this website
www.type550.com