I just finished a flight test on a UH-1H converted to be a Huey II clone. I t had all of the Huey II engine, drive train, tail and main rotor, and structural mods. It's a real horse! Can't reveal the results of the test but suffice to say that a 10,500 lb. 11,000 ft DA IGE hover was achieved. It also had BLR strakes and FastFin installed.
Next week I go back to flying a standard UH-1H.