I repeat; my '64 Valiant had an "installed by ME" 1971 Demon 340 engine, and with the engine bolted down to the mounts, the manifolds were TRAPPED, solid, on BOTH sides so that the engine could not move... there was NO clearance. That car had never been wrecked, so I don't know why some of the manifolds fit and others (like mine) wouldn.t... It cost me a set of headers... :(
