One of the guys did a dyno compare on his hot street 418W. Victor Jr. with 830 Holley vs. the Tunnel Wedge with a pair of Holley 465 carbs. The Tunnel Wedge was bolted on
right out the box with no port matching or other work. 1 inch 4 hole spacers on the intake and heads were AFR 205 I believe. Took some jetting changes to try and get the cylinder A/F as close as possible as O2 sensors for each header pipe. The Tunnel Wedge was ahead by 30 HP and 11 Torque at 6400 RPM !