Hi Dave,
Yes, that would make it the right grade for anodizing. Note that all the old anodizing must be stripped off first. This can reduce the part size by a few thou but it's only noticeable by way of slightly rounded edges. Takes the edge off,,,,
That gold colour though, may be a bit hard to duplicate. The Norvel head was done with a gold dye but it comes out more orange than gold. How accurate do you need the colour? I could experiment with some spare heads of my own but the grade of ally from one manufacturer to another is unknown.
Or, I could make it green, red, PURPLE [X(] etc.
PM me for more details.