Info on Potter racing heads?

[2.8RS]

I heard of the Potter racing heads. I know they aren't made anymore but does anyone have information on them. Seeing them peaked my interest in them since there isn't much for us iron head guys out there.

[bszopi]

The only things we could ever dig up was some photos and that one guy who had them (bought the engine from a midget racer) had them ported by a well known shop in Indianapolis. Oh, and the heads would require a custom manifold setup, as they are complete heads, unlike the stock heads where the intake manifold completes the top part of the head.