mk5 engine swap

[burnsyfc]

Hi folks looking some help from the experts i have a 1.4 fsi golf mk5 2004 which my timming chain went and wrecked the engine and im on the look out for the same engine with the same engine code but cant get a bkg one can only get a bky one what will i need to get it to run will i need a ecu and wiring loom or will the old one of the old engine do