Had some trouble with overheating last time I went wheeling. I've since thrown out the auto in favor of a SM465, should help. New thermostat and waterpump too. Is that enough? What about an electric fan? Do the kits come with something that controls them, or do they just run all the time? Should I get a different radiator? I just don't want to be worrying about heat next time I'm slowly crawling up a mountain on a hot day.