Is ZTS and Zx3 engines?

Are the engines in the focus zts and zx3 the same cause im looking to buy a turbo for my zts but their onlypromoting for the zx3's and 5's so i was wondering if i bought one for a zx3 it would fit in my zts

If its a zetec then yes...and i think ZTC's are zetecs (dohc)