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tuned-length primaries for decreased backpressure and increased exhaust velocity improving HP
1-5/8" mandrel-bent primary tubes
1959-1961 Chevrolet Impala 348 CID
2005-2006 GMC Sierra 1500 HD
Flowtech Shorty Headers - Black Painted - 91830FLT fittings-and-hoses tuned-length primaries for decreased backpressureOverview: 88 95 Chevy GMC Truck, 1500 2500, 92 95 Suburban, 92 94 Blazer Jimmy, 95 Tahoe Yukon: 5. 0L 5. 7L, Tube Size 1. 5" O. D.; Black Paint; 50 State Legal header C. A. R. B. EO #D 115 16. Features: This is a 50 State Legal header C. A. R. B. EO #D 115 16. Sturdy 16 gauge tubing Extra thick 3 8 flanges for a leak free seal Designed as a direct fit replacement for OEM exhaust manifolds Will accommodate all emission control devices Bolts directly to
