yea thats right they do. even the fiesta st lump are highly tuneable, with just an exhaust, cams, filter and map you can have 190-200hp

this is what iv been looking at. then add on a low compression turbo or a supercharger and your laughing

as far as im aware, the main differences between the zetec and duratec lumps is the zetecs are belt driven and the duratecs are chain driven. theres obviously loads of other small differences which make them completely different but in simple terms thats how i understand them. and that the duratec bottom ends are stronger aswel.