Hi René,
We covered all the options in our WhatsApp Z group, but I'll leave some details too. Let me know if you have further questions.
Largest sizes we can do for the 370z/350z:
Front:
8-Pot 380x32mm - 19"
Big 8-Pot 405x36mm - 20"
Big+ 8-Pot 430x36mm - 21"
Rear:
6 Pot 380x32mm - 19"
6 Pot 380x32mm - 19"
6 Pot 405x34mm - 20"
Notice the front calipers, they are all different design: 8-Pot, Big 8-Pot, Big+ 8-Pot.
Big 8Pot caliper design here:
8 Pot design: