The Brembo website has recently been updated so that you can search for rotors by dimension (diameter, offset, numbers of lugs, etc.). You would probably have to redrill for your hub but It might be a good source for information:
http://www.brembo.com/ENG/catalogo_AM/2007/index.html
Sweet!
That link is not good any more , but here is a link to take you to the new page !
http://bremboaftermarket.com/En/Car_Disc_Catalogue/Catalogue_Search.aspx?SearchMode=Size