Indy mod man manifold opinions

Was just reading my Mopar Action mag, (in the office) and noticed that they now make a mod man Intake for the LA engines, I know the idea is to have a manifold that can change from 1-4bbl, 2-4bbls or 6pac, but looking at the manifold there appears to be no runners, so what do you all think, can these work or make HP like a convential manifold, it would be interesting to see someone do a dyno test. Price on this thing is $500.00 seems pricey, so what do you all think anyone have one??