yes a friend of mine did swapped the whole K20c1 2.0T type r 315bhp engine from FK2 UKDM spec, later on he got all the FK8 bolt-on parts as civic X is also similar to FK8 type r chasis/body. Also its got many other mods like bigger aftermarket turbo running on bigger injectors, bigger fuel pump etc etc
BTW K20c2 is 2.0 NA engine, so no one did tht swapped yet as those are USDM specs.