for the moment, i will disagree...possibly the factory style 2 barrel, but i have seen numerous dyno tests sat otherwise...not so much for power, but the single plane does help equal out the cylinder distribution and the A/F R seems to pull in tighter per cylinder.
just adding a 1.5" spacer to my RPM AIR GAP made a huge difference in idle, throttle response and overall driveability
just adding a 1.5" spacer to my RPM AIR GAP made a huge difference in idle, throttle response and overall driveability