No, some ass-clown is selling those.
You need the master cylinder, calipers, caliper carriers, hubs and flexi hoses, as well as pads and discs.
Or go find a 280mm set up on a SEAT - there's a fair few out there which use 280mm - anything four-stud and you'll be away.
I'd buy the master cylinder new from GSF, or ECP.
Add that lot and you'll stand the thing on its nose when you stamp on the middle pedal.