Hi mate ,it's not a fixation with dealer bolts ,i did try other avenues when i ordered from AS Performance i got the bolt size from Ian Godney gave it to Alyn and the bolts i got did not fit I called up next day just to comfirm the bolt size and ASP were cconfused,they then consulted other people including Ian Godney and all confirmed that the bolt size should be M12X1.5mm pitch so there thinking is the hatchback calipers are a different bolt size ,me i do not know but someone will ,might actually get an engineer to check the thread on it .Did not want to keep buying the wrong bolts my house would have looked like an ironmongers then she would have told me to bolt anyway thanks for the link Arch handy to have for the future .
Cheers Kenny