Edelbrock Street Ram on a 408?!?

This is a 383 intake shoot out and the last manifold is a Weiand High Ram 2x4 Tunel Ram
and did the best but doesn't show what happens below 3000 rpm, this might be helpful.

http://www.hotrod.com/techarticles/hrdp_0712_mopar_intake_manifold_comparo/viewall.html

http://www.hotrod.com/techarticles/hrdp_0801_mopar_intake_manifolds/viewall.html

The only problem with these they don't show how it would be on the street, I was toying with the idea of a 2x4 Tunnel ram on my 273.