Why....neither are good calipers / pistons. You would be better off rebuilding your existing calipers and installing new disks / pads / fluids / hoses etc or going the whole hog and buying a new kit!!
Cheers guys,I will go another route. I'm just looking for an intermediate solution for the track between standard disks with race pads (at the moment) and an AP kit (which will cost me a fortune). Any ideas?
t calipers. They work perfectly on the road, but I can't see why you'd want to try to fit them to another car.