The 0-4412 is designed as a stock replacement for 2BBL street applications. Whether you are looking for a replacement carburettor to replace your tired and worn factory unit, the Holley 0-4412 Performance 2BBL is the perfect choice. Aluminium construction and vibratory polished for good looks Manual (Cable driven, hand operated) choke for precise cold start control 50cc accelerator pump for additional fuel under initial acceleration Compatible with GM, Chrysler, and Ford A/T kick-down linkage. Additional parts may be required. Power valve blow-out protection