HB32; I have a 58 Chevy 1/2 ton with Fenton intake (& exhaust manifold) with two Carter Webers sourced from Tom Langdons Stovebolt 6 and consistently get decent mileage, 18 mpg on the highway at 65 plus MPH. Also have installed a three speed overdrive from a later car. Performance is O.K. and in my mind that is the way to go. SOB
