is it safe to replace the stock 0.9bar radiator cap to 1.3bar, as suggested by someone to overcome the top-up coolant in the bottle after each street battle?! the radiator components ie. rubber hoses, water pump, thermo, are all stock... so worried once the higher pressure cap is installed, these components may not be able to sustain?! if it's safe to replace, which one is preferred ie. Ralliart, GReddy, Cusco, Blitz, APEXi?! some says the higher pressure cap will raise the boiling point too, is this good for the radiator then?!