Schoenfeld Asphalt Late Model Crossover Headers - 1-3/4" Diameter Tubes - 3" Diameter x 8" Length Collector - Standard SB Chevy 15-NEC-N-A and specialty engineering services

and specialty engineering services

and can utilize both the factory calibration resistor and free-air calibration methods

After making your changes

1975-1981 Pontiac Firebird

Schoenfeld Asphalt Late Model Crossover Headers - 1-3/4" Diameter Tubes - 3" Diameter x 8" Length Collector - Standard SB Chevy 15-NEC-N-A and specialty engineering servicesConventional Crossover HeadersHeaders conform tightly to the cylinder head. Fits Bemco, Coleman, Hamke, Howe, Pre 1998 Lefthander and Port City. Started in 1974, Schoenfeld is known for custom fabricated headers for all forms of circle track racing. Schoenfeld Headers is the worlds largest manufacturer of circle track headers, but they specialize in a variety of high quality exhaust parts, including turn downs, extensions, tubing bends and elbows,