I have one from the first group buy. They are are cut perfectly and fit like a glove above the radiator. The aim of these is to prevent the air flowing above the radiator, so that it enters into the radiator. Not sure how effective these are, but if you're a person that likes to track your car or go on spirited drives where you're at high rpms most of the time, then I would think that these will make a difference then. Also, everyone on here that has eyelids, c-one wing tips is a ricer anyway...so nothing to be ashamed of. :D