Headers, Dirt Late Model, Tri-Y, 1-3/4 to 2 in Primary, 3-1/2 in Collector, Steel, Black Paint, 9-13 Degree Head, Small Block Chevy, Kit. Product Line: Dirt Late Model. Primary Diameter 1: 1-3/4 in.Primary Diameter 2: 2 in. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Exhaust & Emission Systems\Manifolds & Headers". The seller is "titantime" and is located in this country: US. This item can be shipped to United States.