Super cool intake I have one but know nothing about it , rpm wise , cam size, duration it would need or if they just don't work. Not much info out there published about them I was told about 20 or 25 of them made If I remember right,

It is a true reflection however on the eras concern for a true stock look of barring hood scoops/bulges.
Dual quads on a hemi was a very limited time offering in Nascar if I remember correctly.