Trick Flow 440 heads, The Real Deal?

If you had to choose, do you think an unported M1 with a 4500 will be as good as the TFS with the 4150?

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Just wondering, if those ported intakes make so much more power why doesn't someone just cast them with
those dimensions?

Even if you still had to go in and make them smoother it would beat spending an extra $1400 per manifold!
($1700 total including the cost of the manifold itself).