Properly Supply The Additional Fuel Needed For High Boost / Performance Engines. 5/16 Fuel Bore For High Power Applications.Fuel Rails Included With mounting Hardware and Steel Braided. CHEVROLET SMALL BLOCK V8 GEN. 5.7 L / 346 CI (LS1, LS6). Fits: LS based engines with. Original LS1 / LS2 / LS6 Engine Applications. The item "GM CHEVY BILLET ALUMINUM LS1 LS6 INTAKE FUEL INJECTOR RAILS RAIL KIT CORVETTE LS" is in sale since Friday, December 29, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Air Intake & Fuel Delivery\Intake Manifold". The seller is "npboosted" and is located in Campbell River, British Columbia. This item can be shipped worldwide.