I bought two different headers both tubular..Both to fit 250CID..They fit Ok but I figured out they were designed for the 292 which has a higher deck..The front one didn't go over the left mount very good and didn't clear the front edge of the intake.. A ball peen modification made it fit but the collectors are still too low to the ground for my liking because of the shorter height of the 250..But everything fit around the clutch area OK..Getting the cross shaft ball mount bracket bolted onto the block was a real pain..It has to go on last after the rear header is installed..I'll never use them again..I am saving up for Fentons..Good luck..Al....