I'm running pro-alloy rad and IC... But also have an Aritec turbo cooler which made a massive difference on full boost temps....

This is as the water heated by the turbo is ordinarily returned to the cold side of the radiator..therefore heating the water back up before it re-enters the block!?!?

The little turbo cooler now takes some of the temp out of the returned turbo coolant..
I am however not running a massive spec engine..Just blueprinted 1600cvh with kent cam, chip and -31 actuator.

Hope this sheds some light for you mate.