So far I have found 3 downloadable siddurim that follow the Spanish minhag: Here they are: Portuguese Prayer Book 1825 edition, Livorno (downloadable - Italian and Hebrew) http://books.google.co.uk/books?id=tPg3pVvJIhYC Seder Tephillah Mi-kal Ha-shanah, Rabbi David Pardo 1844 (There is a download link available) http://bvpb.mcu.es/es/consulta/registro.cmd?id=469577 Siddur Beth Hillel (Printed in Egypt) Rabbi Hillel Yaakob Fari, 1913 (select 'all http' for download links) http://archive.org/details/sidurbethilelsed00egyp