DTH THY-375Y-C Long Tube Tri-Y Headers wAdapters- Ceramic Coated Vehicle Type: Car Fitment: 1970-1974/Chevrolet/Camaro/Header Exit: Dual; Primary/Collector: 1.625in, 2.5in; Fits w/Factory Or Aftermarket A/C; Will Fit Angle Plug Cylinder Heads; Will Not Fit With Steering Column Shift; No D-Port Cylinder Heads (All Gm)/265-400::CARB EO#: D-540-5^^1968-1978/Chevrolet/Chevelle/Header Exit: Dual; Primary/Collector: 1.625in, 2.5in; Fits w/Factory Or Aftermarket A/C; Will Fit Angle Plug Cylinder Heads; Will Not Fit With Steering Column Shift; No D-Port Cylinder Heads (All Gm)/265-400::CARB EO#: D-540-5^^1968-1978/Chevrolet/El Camino/Header Exit: Dual; Primary/Collector: 1.625in, 2.5in; Fits w/Factory Or Aftermarket A/C; Will Fit Angle Plug Cylinder Heads; Will Not Fit With Steering Column Shift; No D-Port Cylinder Heads (All Gm)/265-400::CARB EO#: D-540-5^^1968-1974/Chevrolet/Nova/Header Exit: Dual; Primary/Collector: 1.625in, 2.5in...