So I got the top surface done.
I started out with a modified spark plug stop to use as a gauge. I used the end of the threaded rod that goes up through the head to touch off from. This let me know where I was in relation to the combustion chamber.
I surfaced the top,did all the cam tower work, spot faced the head bolt bosses, bored the spark plug tube bosses to the correct depth, tapped the bosses for the tubes and drilled the oil gallery.
Had to relieve one side of the cam towers for the ARP washers to clear.
Set a few towers on for fun.