Please can anyone tell me if both the 1.8 and 2.0 litre Silvertop Zetec heads are the same . I have the chance to buy a set of Piper fast road cams complete with the reworked head that goes with them from a 1.8 Zetec and wanted to fit it all up to a 2 .0 litre engine can I do it. Any help and I would be greatfull. Thanks.