nowt wrong with frs brembo callipers and disks under 16's:

i'd firstly measure the diameter inside your wheels and check it's possible, if you like i will measure the same on my rotas and then you'll know for sure if you can fit them at all.
i did make my own brackets and also had to trim the callipers a fair bit.
alternatively i believe 406 discs can be used, but they are only 305mm and have to work with the offset.