340 Manifolds, Reproduction, Any interest?

Back to the original question - hell yeah I'd buy them and put sets away for future projects. If you think you can do it go for it - I see those 68-70 manifolds disappear pronto at swap meets and on this site, you know you could sell a pile of them. With the resources you talk about, if you could run a CNC porting program that cleaned up the inside that would just be extra cost gravy for you to offer...