Does anyone know if any manufacturer makes a spread bore intake for small block chryslers, besides edelbrock's performer manifold and mopar performance's spread bore dual plane low rise? I was told those are stock replacements, just made out of aluminum is all. Im looking for something to the equivalent of a edelbrock performer RPM or RPM air gap without going to a single plane. doesnt really matter to me who the manufacturer is. i would like a step or two above stock, and still be able to use my thermo quad. thanks guys.
