Does that head fit a .25 or bigger ? I thought you had a cnc mill conversion.... right ?? Although I imagine the codes for that job would be quite large! May be easier if you have a friend or someone you know scan in the points with a pen to get the specifics dead on! I'm looking forward to getting my mill retro fitted so that I can make heads for my r/c's. But I can say that I've never seen one with two glow plugs.....!! UP THE NITRO content !! she'll take flight.......for sure.
I'm new at this.... so don't bash me too bad.....One other option:
Make a casting of it to give you the general idea, then finish surface it in the mill.