Just thinking as the car most of the engine upgrades has 312mm brakes he would have at least gone for that as an upgrade, aggreed the 288mm aren't bad, was going to try and put some on my mk2 but heard its a no go cause of the discs.
288s stopped lardy mk3 VR's well enough so there should be no need to really uprate these other than decent discs, pads, fluid and lines...esp as there has been no weight added. Most people only upgrade brakes for aesthetic reasons