Actually CGI stands for Compacted Graphite Iron

The American Site you got that information is wrong

Burtons are expecting 8 CGI blocks from Cosworth in a week or two.

They are a direct copy of a road going Focus Block appart from the material grade.

Burtons want £550 each I believe

The WRC block can be dry or wet linered depending on year and is lightened with a few little mods to water inlets etc.