I hope somebody does come up with a link to the article. I'd love to see it. I saw an article in a Chevy high perf. mag. recently that tested a bunch of manifolds and the Air-gap pretty much crushed the opponents. They did the test with 2 different cams too. A mild street cam and a pretty aggressive roller. Even with the big cam the Air-gap did better than any other manifold below 5500 rpm. Only a few made more power above that and even then the diff. wasn't much.
