Id like to know what might be done to improve power output at low rpm ranges. I am aware of the rpm-torque-HP and understand that you are inherently are going to get less HP at lower RPM on a given setup. For sake of argument however, say I have an LS3 stroked and slightly bored to 416 cu-in. Assume that the engine will be run consistently around 3800 rpm with a self imposed redline of 4500 rpm. Also assume that the rotating assembly is built up to handle boost. Finally assume that cam, heads, intake/exhaust are all selected for this same purpose.

Is there an arrangement of fuel, forced induction, and tuning that allows serious HP to be made at that engine speed. Some of my initial thoughts would be to run a twin turbo set up with undersized turbines or small A/R so they would spool early on but wouldn't choke exhaust flow as the engine would never see 6000rpm. Maybe as supercharger with the right pulley could accomplish a similar thing. What else am I missing in terms of ways to improve low end power, and all things being ideal, how much crank HP could reasonably (or unreasonably) be made at 4500 rpm.