Hemi heads on a poly?

Some of the poly motors also came as a Hemi - 270, 315, and 354 comes to mind. I don't think the poly 318 ever did and don't think it will convert to a Hemi. If it did, it would require all the internal Hemi stuff as well. You might check over with Gary Pavlovich (poly guru) over at the poly forum on Yahoo.