Had some custom adaptors fabricated out of aluminium, not an easy task.
the installation is very tight.
My rear brakes are 286 by 25mm vented rotors with a sliding piston caliper, they are off a locally produced Ford with competition pads and ducting for cooling.
they are holding up OK for now, maybe at a later date I will upgrade to the 4 piston rears.
Higher priority is to upgrade my turbos to some new Garretts.