I did notice a fair increase in throttle response, not sure about power though. Overall, I think it's a great conversion, even if it's just for the more effective filtering of the air.
1961 USMC M422 (Shorty with Thin Windshield)
1962 Ford M151 (original paint/markings)
1962 Economite Prototype
1980 Dragoon 300 (Armored Car)
2000 USMC M1030B1 Motorcycle
flame throwers, Class 3
and an avid falconer