/futa/, Are there any Manga's you know of that contain guy on dick-girl scenarios? Most futa contains hermaphrodites, but are there any typical transsexual ones?
Amanoja's "TS I love you" #1-5 has what you want. filestube 's search engine should have plenty of links.
Look up the "Inferior" dojins on Rs.4chan.org. The first features crossdresser/male, the fourth has futa/crossdresser, and the sixth has futa/male. Not sure about the second, third and fifth.