I've been ponderin' on this problem for a few days, now, and I sure don't have any more suggestions. I went to the Edelbrock pages, and took a look at that manifold; I was wrong in my thinking, that you could look down the runners from the flange. Iwas thinkin about one of those straight runner "X" type manifolds. I also noted that that manifold has no plenum dividers in it, so the intake turbulence should help keep the charges to the cylinders fairly even. I would sure be interrested to know what you find out about this. Keep us posted, if you don't mind.