Just found this thread, i'm the chap who bought the WRC cosworth stuff

there are a few types of CGI blocks, all based on the road going zetec r

you've got the Standard Road going Zetec CGI block, like burtons are selling, then the WRC spec blocks which use the Zetec CGI block as a base and are totally machined down and either use wet or dry liners. these are radically different from a stock block and if you had one you'd know

Ian