[mechanickeith]

Current asking cost is due to it being a factory performance part with a very limited production. Plusses for that manifold is the weight difference verses the cast iron one & no heat risor,,,minuses is that it will only fit the 60-later head & costs much $$$ to modify to work on the newer heads. For the cost of that manifold, you could get a very good head & manifold combo that will out perform any of the older stuff...