For a six? Not yet, but my 2.3 Ranger has a header I made in 1999.
Took me a week but I was real fussy on tube length and was healing up from my navel hernia at the time. My first recomindation is to use a header plate 3/8 thick, it clamps the gasket much better, no leaks yet.
I got my parts from Headers By Ed, good people to work with though I made my own plate cause I thought theirs was overpriced. Main reason I have not made one for my 200 is I want single outlet and have not seen the elegant way to do that, so far. A 2.5 exhaust should handle the power I want to make, and one BIG pipe sounds much meaner than two small ones.
farmer kev