I'm interested in fabricating a set ( and likely multiple sets if things turn out well ) of exhaust manifolds with a local friend. This would likely be for an NA car to begin with, as the manifold is more universal w/o turbos and there is no shorty header on the market to match up w/ downpipes. 8:1 heads may share a flange w/ the 10:1s, but I honestly don't know.
Specifically what I would be interested in is a drawing I could use to get a flange either water jetted or laser cut. I could make up the drawing myself using specs off my own car, but if somebody had already done some of the legwork I'd appreciate a head start. If you've got something that might help, or even just some info you think I might need to consider, please let me know. All input is appreciated
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-Scott