I own a 2006 Mustang GT & am planning a complete cooling system upgrade. I would like to replace all of the Hoses, Install a new all aluminum Radiator, new water pump, new fan, new coolant overflow resevior & a new Thermostat. I would appreciate feedback & suggestions on what thermostat should be bought. On RockAuto, there are 2 Motorcraft 190 degree Thermostats, one has a rubber valve & one doesn't. Which one is the right one? Or should a lower temp thermostat be installed. What are...

Complete Cooling System Upgrade