{"product_id":"mid-length-headers-for-70-81-f-body-75-79-x-body-4-8-6-2l-ls-engine-swap-d335","title":"Mid-Length Headers for 70-81 F Body\/75-79 X Body 4.8-6.2L LS Engine Swap D335","description":"\u003cp\u003e\u003cstrong\u003eOverview:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e70-81 F Body\/75-9 X Body LS Mid Slvr Ctd\u003c\/p\u003e\u003cp\u003eMid-Length Headers, often called Clipsters, are engineered to provide superior performance gains over Manifold Replacements or Block Hugger style headers. These headers enhance your vehicles's horsepower and torque while preserving ground clearance for cars with a lowered stance and trucks where long tube headers may hang to low.\r\nThis fitment is tailored for popular aftermarket engine swap kits. Doug's engine swap headers were developed to solve common fitment issues in tight spaces, making your swap process smoother. No more guesswork or modifications needed - just straightforward installations that save you time and frustration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3\/8\" Thick machined flanges to prevent warping\u003c\/li\u003e\n\u003cli\u003eCNC mandrel bent tubes for ensuring accurate fit and optimal flow\u003c\/li\u003e\n\u003cli\u003eHeavy duty 16-gauge tubing for long life\u003c\/li\u003e\n\u003cli\u003eTubes are pre-polished to removed scratches before applying metallic ceramic or hi-temp black coating\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecs:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand: \u003c\/strong\u003eDoug's Headers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Attachment: \u003c\/strong\u003e2-Bolt Flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Diameter: \u003c\/strong\u003e3.0 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollector Port Diameter: \u003c\/strong\u003e3.0 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor: \u003c\/strong\u003eSilver\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder Head Port Shape: \u003c\/strong\u003eRound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign: \u003c\/strong\u003eFull-length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEGT Port: \u003c\/strong\u003eNo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish: \u003c\/strong\u003eMetallic Ceramic Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange Thickness: \u003c\/strong\u003e0.375 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Or Seal Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGaskets Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade Type: \u003c\/strong\u003ePerformance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Material: \u003c\/strong\u003eSteel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeader Style: \u003c\/strong\u003eFull-length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial: \u003c\/strong\u003eSteel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware Included: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxygen Sensor Port: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Shape: \u003c\/strong\u003eRound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tube Outside Diameter: \u003c\/strong\u003e1.75 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Tubing Diameter: \u003c\/strong\u003e1.75 IN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProp 65 (C, R or CR): \u003c\/strong\u003eCR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProp 65 Yes\/No: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSheen Level: \u003c\/strong\u003eSemi-Gloss\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitle: \u003c\/strong\u003eDoug's Mid Length Header 70-81 F Body\/75-79 X Body 4.8-6.2L LS Engine Swap 1 3\/4\" Primary 3\" Collector Silver Ceramic Coated D335\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTube Wall Thickness: \u003c\/strong\u003e16 GU\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number: \u003c\/strong\u003eD335\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eEmissions:\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eThis Product is LEGAL for Closed Course Competition use or Pre-Emissions Controlled Vehicles ONLY. It is Not Legal for use on any Emissions Controlled Vehicle for Street or Off Highway use.\u003c\/li\u003e \u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eInstructions:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/prod-da.s3.us-east-2.amazonaws.com\/BHKJ\/f9068307b4dfc22ba5f4cc91a7ae456f.pdf\" target=\"_blank\"\u003eClick here for installation instructions!\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment Notes: \u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eO2 bungs are welded on both collectors.\u003c\/li\u003e\n\u003cli\u003eRequires Doug's LS1 adapter plate kit P\/N SK100 or equivalent.\u003c\/li\u003e\n\u003cli\u003eOEM Domed collector style.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Doug's Headers","offers":[{"title":"Default Title","offer_id":54508691554517,"sku":"D335-BKLK","price":781.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2493\/0960\/files\/026dae2435fd4e21e22cb32522719e08.jpg?v=1786704800","url":"https:\/\/moderndaymuffler.com\/products\/mid-length-headers-for-70-81-f-body-75-79-x-body-4-8-6-2l-ls-engine-swap-d335","provider":"Modern Day Muffler","version":"1.0","type":"link"}