Cure for lazy Magnum...Has anyone built a Magnum for 7k+ revs?
One thing to be sure of...if the motor is a newer design, the engineers were really good at filling in any dips in the midrange torque curve. This makes an engine seem less like it's 'coming onto the cam' and it seems like it isn't as snappy, because it never really wakes up. It's awake the entire time.
That said, put a cam matched to your intake and exhaust in it, and get back to us ;-)
And I'm wondering about your assessments. I've yet to see a 318 that didn't like to rev less than a 5.9.