It has an airtec black big core rad. The things that got changed with that is surface area and top feed location of the coolant to the radiator.
the hot coolant needs to travel down 30cm before it can reach the rad.

driving it normally the temps are good. and the coolant stays in.

The things i did/planning to do is: watermethanol injection, oil cooler, a coolant pipe with cooling ability due to large surface, a colder thermostat, increasing pressure and if it fits an turbo aftercooler in line with the matrix heater.
It also gets an extra coolant temp sensor to see how much the coolant cools through the rad.

all bits should help and these methods will not cost much compared to another rad which i have no room for.