We have an edelbork for a mopar that looks like that, removable plenum and all. We wrapped some foam rubber around it and use it for a stool.
Just make a top for it. I wish I could help you more it could just as easily be a Holley or a Weiand. But it sure resembles the edelbrock that we have.
Boyz I think we have a winner. Other than the "Holley" and Pro Dominator" cast into the intake it looks like a match. The gasket looks exact. Did early ones not have the casting?