Dave, how much are your bigger discs to buy???
Technically they're smaller, the kit retails at £1250 and that includes lines bolts carriers etc etc
Sounds a lot but mate that to some eBay TTRS calipers at 3-400£ and its a affordable BBK, if you want new calipers and some fast road Pagids it comes to just under £2k....
Much better value than the VWR kit that costs £600 to make and retails at £2.2k bonkers!