I think a turbo would be much better on an engine than a Roots type blower/supercharger. The efficiency of the centrifugal compressors are much better than a Roots. That generates much less heat in the air stream which leads to detonation. I think that was why a lot of the TF guys went to the screw type compressor years ago, better efficiency. I don't think they were as good as the centrifugal design though.