Single plane + cubes = who the hell cares, my 357 makes power at 3000rpm and pulls to 7000rpm no problem and takes any car on the street in between.No dual plane intake can pull like that.And below 3000rpms the car can still turn over my 26X10.5" slick at 2000rpm even with my 3.73 gears and a C4 w/3500rpm converter.