brakes or caliper

Looking to change my fr front brakes to the r32 345mm ones. Seen a bit of info regarding the front and from what I gather aslong as you have 18" alloys, the r32 carriers and cables then your good to go. (Please correct me if I'm wrong or if I missed something) Can the same be said about...

Is there a difference between the rear brake set up / calipers on the Cupra compared to the Cupra R??