NEW SOUTHWEST SPEED BLACK LAKE STYLE HEADERS FOR SMALL BLOCK CHEVY 265-400 V8 ENGINES, 1 5/8" TUBES, STREET ROD, HOT ROD, RAT ROD, NOSTALGIA, VINTAGE, 265, 283, 302, 327, 350, 400 ci MOTORS Pair Of Brand New Southwest Speed Flat Black Lake Style Headers For Small Block Chevy 265-400CI Engines (SWS Part # 440-2312) | * This Pair Of Southwest Speed Lake Style Headers Are Great For Hot Rods, Street Rods, Rat Rods And Nostalgia Rods, And Are Hotter Than Ever | * Nothing Gives Your Vintage Rod That Authentic Dry Lakes Competition Look Like A Set Of Lake Style Headers Originally Designed To Blow Across The Salt Flats Of Bonneville, These Exposed Small Block Chevy Headers Work Great On Rods Without Hoods, But Are Often Used With Side Skirts Trimmed Up To Fit Around The Headers | * Each Lake Style Header Has A Bottom Exit Flange So You Can Connect It To A Muffled Under-Car Exhaust When The End Plate Is On | * Unbolting And Removing The End Caps Delivers The True Horsepower And Sound Of The Small Block Chevy | * 1-5/8" Primary Tubes Merging To The 3-1/2" Mega-Phone Collectors, Complete With Header Bolts And Gaskets And Reducer Bolts And Gaskets | * These Headers Are Ground Parallel With .350" Flanges On The Cylinder Head Surface, And Includes | * A Pair Of 2-1/2" Reducers To Complete The Installation | * These Lake Style Headers Fit Angle Or Straight Plug Heads, And No Spark Plug Or Spark Plug Wire Restrictions Note: Refer To Measurement Chart Shown In The Images To Insure Headers Will Fit Your Vehicle And Application Features: | * 1-5/8" Primaries To The 3-1/2" Mega-Phone Collector | * Includes 2-1/2" Reducers To Connect Exhaust Under The Vehicle | * Removable End Plates Allow You To Run Open Headers With Ease | * Great For Hot Rods, Street Rods, Rat Rods, And Any Nostalgia Rod | * More Performance | * Better Fuel Mileage | * Nice Choice To Replace Cast Iron Exhaust Manifolds | * Enhances The Looks Of Any Rod | * Includes Gaskets And Mounting Hardware | * Painted Flat Black To Resist Early Rust And Corrosion Applications: | * Fits All Small Block Chevrolet V-8 Engines With Standard Exhaust Pattern | * Fits 265-400 CU. IN. Standard, Vortec, And D-Port ZZ-4 Heads (Not LT-1)