for the focus mk1 with black top zetec e engine

1.8 is 115bhp and 2l is 130bhp. cams are same, dont think the heads are quite the same.

you can swap the whole engine over piss easy along with ecu but the 2l's do run the stronger mtx75 gear box whereas the 1.8 runs the ib5.

you can prob run either box on the 2l but not 100% sure and you'd have to check on what clutch to use.