Thank you for the explanation young Mike.
But, the nissan calipers with a Jag rotor will do just fine taaa loads. That means I get rid of 7Kg off each wheel to help the springs and shocks do their job. Those nissan calipers are made of the same stuff as those c.. ch... che..... ahmm .... beer cans
The nissan calipers are only slightly smaller in pad area but still a 4 pot caliper and are similar to those used in the WRX's.
Hopefully my theory will help with better control of the front end.