Hedman Hedders ELITE Hedders; 1-5/8 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design 68298 1991-mazda-mx-6-esi8938686 "name":"What hardware is included with

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means that no matter how low the airflow is

Flowtech recommends using cast iron exhaust manifolds or old heaters to break in a new engines to aviod coating damage

1L Hemi engines

Hedman Hedders Silver Long-Tube Headers for 67-91 2WD/4WD GM Trucks w/396-502 69116

Hedman Hedders ELITE Hedders; 1-5/8 in. Tube Dia.; 3 in. Coll.; FULL LENGTH Design 68298 1991-mazda-mx-6-esi8938686 "name":"What hardware is included withHedman Hedders has been manufacturing quality headers in the USA since 1954, and they've been manufacturing long and MID LENGTH tube headers for Chevy passenger cars for decades. Each set uses mild steel, smooth flowing, CNC mandrel bent tubes, that are hand welded to ensure each pair is identical to the next. Hedman's unique, gasketless ball and socket collector design allows your Small Block Chevy exhaust system to bolt up, even if it is not