Great numbers, but plenty of people have cloned reputable headers and have since been prosecuted by the shop that actually did the R&D. Not smart. Just my .02, but if i'm not mistaken SSR is still in buisness so be careful dropping names.
Call Active Autowerke and ask them about sending a Supersprint header to China and having it reproduced under their name. I'm sure they will be hush hush about it for legal reasons, after all they had to "discontinue" their original design.