I still say you cant give a good recommendation without knowing more about the build.
I tested the Hughes Whiplash on a 440 on my dyno that is on their web page. I am testing a Comp Thumper in a small block now. They have their place but there are better choices depending on the rest of the build.
There are builds that a big exhaust lobe like that shines,and other builds will not be happy with them.
Keith