finally found a header that works sort of
 

got a set of hedman husler headers (ceramic coated) for my 406 smallblock.
they got the 1 3/4 primaries and 3" collectors.
only problem is that i need to hog out the ports a bit to match the gasket.
another problem is the plug space on #4 and #3 Ill fix that with a spacer I think.
http://webpages.charter.net/harrycoo...20(Medium).JPG
http://webpages.charter.net/harrycoo...20(Medium).JPG
http://webpages.charter.net/harrycoo...20(Medium).JPG

If you are talking about hogging out exhuast ports in your heads to match header tubes don't.

That perfect port matching stuff is more magazine bull when you are talking exhaust. Lots of good heads have been ruined by guys reading magazines.
Ed

actually im talking about the primary openings on the headers.
there is extra material there to blend in the opening i need so the flow will be un restricted.

http://www.nimac.biz/
For SBC adaptors and spacers. I got a set for my Stahl pattern headers, they did nice work.