Soon after the first road trips with my Seven (I bought it 3rd hand at least), the exhaust manifold cracked. Welding made it crack on a different place and so on. It just wasn't made right and vibrations under its own weight made it crack again and again. A friend had collected different manifolds from Escorts and Westfields and I could borrow them from him to check for fit. One 4-1 manifold with a welded Westfield sign was from a right hand car. The pipes coming from the flanges were too long and some bends collide with the steering column. I cut them short and a professional welder put the flanges back on. Since then no more cracks. The higher wall thickness and the stainless steel together with the bigger overall pipe diameter make it the ideal manifold for my exhaust system.
Cheers.
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