Are you going for big horsepower? If not I ABSOLUTELY GAURANTEE that using a 1955 or 1956 left side manifold from a 265 V8 wil clear the steering box. The 265 exhaust manifolds are quite easily found at swap meets for around $25. They are a log type manifold that dump at the front and are good for around 250 hp with good free flowing dual exhaust. Above that amount they become restrictive but are fine for a regular street driver.
