Thinking about buying this intake. want some opinions!

I can always swap to an edy super vic and elbow if its a Dawg. Low end shouldnt be much of a problem with this motor anyways. Just for sharts and giggles can somebody explain how this would be different than edy super vic/ or Hogan sheetmetal intake or simular style box high rpm short runner intake. As its very simular to a hogan if you cut the upper plenum off. Please explain why, and exactly More so how the upper plenum volume effects the torque curve? thought this would be more determined by runner lenght/shape/size etc. By stating that this should be used on forced induct only is agreeing that it would flow like a short runner intake(ie the ones mentioned above). By stating that it wont flow above 7k is the opposite. Im kinda confused and actually expected this kinda feed back. This is actually why i posted this in the first place. Someone explain why the upper effects the rpm range in which it makes torque if at all, and if it actually does then wouldnt all our cold air intakes, anderson power pipes etc. effect the rpm torque curve in which our engine make power. Seems like single planes on a Carb setup are the standard, but throw a throttle body on it and you better have forced induction(for short runners)...But then again i dont know *****, so thats why im asking...