I build my own stuff....I have my own design software, my own theories, and I do my own work. I wouldn't be interested in another persons design. I'm not SSAC or XSPower...no offense, I harness my own ideas.
I have to admit, I'm not sure what you've contributed to this thread though? You've stated that someone makes them, then that someone made them, then you lost the point that this entire effort was to make an AFFORDABLE header, not one that was developed by the most expensive header company on the planet (I'll concede that they do good work though) and will be priced accordingly.
If your intention was to bring about the design, yet plug another fabricator, that's fine. I would just assume that if that were the case though, then you should start another group buy thread on his behalf. I'd certainly think you should talk to the guy making it first though, before you start quoting prices and creating buy lists.