The dual mounting bolt pattern will fit any street 4bbl intake (square flange or spread bore), Aerospace Composite fuel bowl offers significant heat insulation benefits over aluminum fuel bowl, Features 2 stage metering rods control easily accessible without carburetor disassembly or removal, An integrated fuel bowl/main body design with gasket above fuel level and no plugged passages to eliminate all potential leak paths, A small 1-3/8" primary throttle bores combined with proven Triple-Stack™ boosters deliver amazingly crisp throttle response and drivability.