481X Stage 3 heads ???

Now that the stage 3 481x heads have been out for a while, Has anyone w/A supercharger switched from there stage 1 or 2 heads and see more power or better ET.? I know the turbo guys are useing them but wonder how they do w/ supercharger.

 

You might check with Robert loar there new roots blown P/M will have them i looked in to them flow numbers were not much better than STG 1-2 heads they did move valves around a little to be able to get a larger push rods that helps a turbo combo a lot