Converting to GTI 6 Brakes?

[JTaylor2005]

Hey all I have a 306 HDI Meridian version. It already has disks all round but I would lile to convert them to the best brakes I cam that aren't aftermarket calipers.

What calipers, disks and pads would I need to get the best stopping power but still lookfairly origional? Except maybe the drilled or grooved disks?

Thanks, Jack