It is pretty much straightforward switch over.
Undo the screws inside the wheel arches, and theres 4 main screws that hold the bumper on the front.
There is a
guide on this site on
how to do it. Ill find it again for you
You will need new
guide profiles for the cupra bumper.
Also will need the extra splashshields for the wheel arch due to being wider at the bottom.