im runnin a full radiator upgrade, meaning fluidyne aluminum radiator, spoon, thermostat, spoon cap, spoon fan switch, fal fan, and upgraded hoses. its a bit overkill but keeps the engine very kewl, round 150-170 degrees most of the time.

koyo is a very good radiator, i heard good stuff bout em. u can save money and get a stock del sol dual core radiator as well. upgrade the cap if ur at it and flush and refill the system and you should be good.