You may be OK but you may not know for sure until you try it. A 427 LR intake will definately fit and it should make power to 6000 rpm - at least that was what they were designed to do. I know they do make a bunch of torque.
I doubt the back carb will cause you much trouble with a medium riser but the front carb will definately sit up inside the scoop. I have a copy of the Great FE Intake Comparison book and I'll see if it has some useful dimensions in it and post them later.