managed to get some mondy mk2 2.0l calipers, discs and pads for £40. after drilling the hub holes to 12mm it all bolted up fine with just over 2mm of spacing on the discs. still cheaper than replacing standard sized pads for uprated jobbies. but if id had money i would have got rs2000 discs as they wouldnt need spacing. anyway a nice cheap solution to better brakes till i can get an st170 set up.