My Sapph 4x4 engine is running at about 98degrees today, im using the correct ratio of coolant to water plus Water Wetter added.

Any idea's how i can improve the cooling without fitting a new rad?

What about the Thermostat?
I assume once it has reached its temp and is fully open is it restictive by much?
Would there be any benefit in drilling some bypass holes or running without the stat at all?

Any advice...