Flowtech 12119FLT Tri-Y Headers 1.5 in. Primary Tubing 1.75 in. Secondary Tubing 2.5 in. Collector Mild Steel Black Finish Tri-Y Headers 1965-1970 Ford 260/289/302 V8 Applications 1-1/2" Tri-Y Black Finish Fits: These Tri-Y style headers fit the popular 65-70 Ford 260/289/302 V8 engines. Collector Diameter: 2-1/2" Header Style: Tri-Y