Holley Supercharger XP 4-Barrel Square Bore 600 CFM Carburetor - No Choke - Mechanical Secondary - Dual Inlet 15-NEC-N The stock rubber bushing with

The stock rubber bushing with large void are great for absorbing NVH

Hyper-Flex(TM) performance polyurethane

6-one-half inch depth

1976-1979 Pontiac Firebird

Holley Supercharger XP 4-Barrel Square Bore 600 CFM Carburetor - No Choke - Mechanical Secondary - Dual Inlet 15-NEC-N The stock rubber bushing withHolley HP carburetors have been the standard in racing carburetors for nearly two decades. Powering the biggest names in NASCAR to the Saturday night racer, HP carburetors are the perfect choice for all types of motorsports. Supercharger HP carburetors are available in 600, 750 and 950 CFM and feature a contoured venturii inlet for balanced air flow, screw in air bleeds for precision tuning capabilities, high flow metering blocks and Dominator style