I had a 68 SS scoop and I didn't like it too much so I sold it. I have seen a few with the 63-64 B-body ramcharger style and they look good, but are pretty big. I agree a period one would look best, the 67 B-body superstock scoop looks cool too.
Much better looking with the hemi scoop! The demon scoop didn't flow well imo, but will even the hemi one clear that giant manifold you are going with now?