I'm crazy enough to make something like that. There are a couple tricky parts there for me to machine, but my machine is capable of machining that.....
I was shocked that shops simply said, "nope, not interested". I provided the SW native files so tool paths would be easy to do. Just need a big Z axis for the water pump back plate...or a 5 axis/horizontal bore.
My mill is a bed mill so I think it would of fit fine. I don't do it for a living - just to play. I can understand why the pros would not have interest.
Not anywhere on your scale - which is very impressive, but this is an adapter I made to fit regular 440 M/T Valve Covers on a B1 head. It was a real pain to engineer, but came out real good.
