Got this Stainless steel 914 4-2-1 header, it's a true 1-1/2"ID .060 wall stainless with 1 3/4" ID secondary and 2" ID main pipe.
No idea who made it, looks well done, all TIG welded.
No stubs so I'll have to make them or see if Chris will sell me a set without the flanges welded on. Plus I'll have to figure out a muffler.