I am going to have a set of stg2 headers made with mean Mikes flanges, on my 87 GN, hopefully this December. When I have the first set produce we are going to produce a jig so we can reproduce them in multiply sets. No price as of yet, I will keep you posted as the project gets going. I do not know how these will compare to the ones made in China as far as design. I am going to structure them like the TA headers for the standard heads. I have not decided on the tube size yet but, I am leaning between 1.62 - 1.75 If interested let me know.