Glynn, I do some for myself, but my standards aren't good enough to offer to do anything for such a cool build.
Have you thought of looking at other items, there are lots of cool shapes to be found in the food making areas of supermarkets, but I guess alloy isn't there any longer. I have a very large jam pot that might make something (it did make a great mould for the nose cone on a Pitts pedal aeroplane )