The original straight runner Torker intake manifold really gets crapped on nowadays. Truth is small plenum single plane manifolds- small plenum denoting street use- work very well. In fact I have somewhere in my home a Hot Rod Magazine from 1974? where Edelbrock has a 1 page ad for their "NEW Torker manifold for the 440." The write up is lengthy- but Edelbrock mentions how the 440s power has been reduced due to emissions and lower compression. They said their "New Torker 440" will bring back some of that lost power on the current low comp 440s. Then, they write: "Bolt on our Torker 440 to a stock high performance 440 Magnum and WOW!" Id at least try the Torker. Marketing these days had pushed the Performer RPM which is a fantastic manifold! But why spend $450 plus on it when that Torker will most likely make you happy with no compromises.