Well went with some plastic ones, they are actually pretty thick, my oldest help I stall the one side, the mounting tape that came with them were crap, good thing I had some good 3m double sided tape. Went out for a drive this last Thursday yo my old job to show the guys the car and no issues with the plastic, car ran a bit cooler, but at a stop light could see the heat coming out and getting out of the hood. Drove the car to my parents house today and looked good in the driveway so had to take a picture. Lol do more auto tuning tomorrow with my oldest, bust after noon today. So far like these vents, plus only $21 off amazon so if they due have issues not a bit loss and the aluminum ones are about the same size on the holes so good there if needs be.