Installation Instruction is NOT Included. Thank You For The Opportunity To Serve You!The item "For Chevy SBC Small Block A/F/G Body V8 Stainless Steel Clipster Exhaust Header" is in sale since Thursday, June 27, 2019. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Exhaust\Exhaust Manifolds & Headers". The seller is "performotor" and is located in Texas, TX. This item can be shipped worldwide.