I spoke to Reyland about the CXN's and depending on the price of alloy they'll be around £1500-1600 and i think i am going to fit the same size as Paul's 500

7.5 x 17 fronts with 205 / 50 /17
8 x 17 rears with 215 / 40 /17

This way the trimming the arches isn't needed which suits me