from what I've read your head can be drilled and tapped for the alum. valve cover.
or you can pick up a used one, get it ready and save down time. when you have a machine shop do the valves have them shave 10 thousands off the deck.
look into the ports, you will see a casting ridge that should be removed with a die grinder, then port match it to the intake manifold. there are videos on youtube that show how to do it.