I'm a newbie and from Oz and I'm curious about the vents on the front guards of the 60's you guys get over there. ???I presume that they are a vent to let the heat out of the engine bay? How robust are they? What do they cost and are they hard to get? I live in the Top End of Australia and I'm looking to find a way to get the my old girl to run a little cooler up here in the tropical heat. 8)