Help me decide on a hood for my race car

Every time I see a cowl hood on a Duster or Demon it reminds me of a Chevelle.
The Pro Stock one follows the shape of the Duster and looks pretty good. But if you decide on it shop around they make a few variations of it and some look alot better than others. How much scoop do you need? Two of the best looking scoops I've seen on Dusters are the taller version 6 pac and the Hemi scoop (the one that's on all the 60's Darts and Barracudas).
Heres a tall 6 pack and another pic of a Pro Stock type scoop.