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FITS ALL STRAIGHT PLUG HEADS
ISOLATES SPRING FROM THREADS TO PREVENT THREAD CHAFING
1982-2003 S10
1955-1957 Two-Ten Series
1966-1970 BELVEDERE
HEADER,BBC,1 3/4",68-74 GM TRUCKS,SUV,LONG TUBE,3",POLISHED STAINLESS STEEL 1963-64 Impala FITS ALL STRAIGHT PLUG HEADSBRAND NEW SOUTHWEST SPEED POLISHED STAINLESS STEEL PERFORMANCE LONG TUBE HEADERS THAT ARE DIRECT FIT FOR 1968 1974 GM TRUCKS WITH BIG BLOCK CHEVY 396 454 CU. IN. ENGINES (SWS PART #440 2443). THIS PAIR OF SOUTHWEST SPEED PERFORMANCE LONG TUBE HEADERS OFFER AN IMMEDIATE INCREASE IN PERFORMANCE BY ELIMINATING BACKPRESSURE, IMPROVING EXHAUST FLOW, AND BUILDING MORE HORSEPOWER. THE CONSISTENT TUBING DIAMETER CONTRIBUTES TO THE SMOOTH AIR FLOW AND GREATER
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