I agree to a point.
Depends on what a person's goal is.
If it's to be faster, then no, it's a waste of $.
If it's to get better milage, then it's not.
Well known fact that q-jet's get better milage on street AND highway.

Just so you know how i really feel about it.
My cars all have nothing less then 400c.i., 2.11/1.77, 75cc's, 744 cams.
Then there's the one i'm building for the 68FB.
440c.i.(4" crk), 2.19/1.71(315cfm), 66cc's, rllr cam, GRP rods, Ross bttn pistons, etc.
700hp N.A., plus a little n2o.
Street car? When i can afford to fill the 20g fuel cell with 110 octane...lol