Well Greg, I plugged your info into my computer and came up with about 480+ HP at 6000 rpm. The torque curve was consistant from about 2500 through 5000 RPM. Looks like a really stout package. However, if you go with what is considered a "Max Flow" intake, your HP would jump up tremendously...to about 550!!!!!
I'm a hobbyist. Not a professional. Don't be hatin'!
