When I asked Nick early this month about headers he said that all he does is reweld stock ones, but might do some new ones in the future. Not sure what those are on his web site.
Keith Mease has some new ones but they haven't been out too long. There was a guy in Ky making some a couple of years ago but I have never seen anyone on this board mention them. I think the business was Under Pressure Performance, or something like that.
HTH,
Tom