I was trying to remember what I had done on my WRX many many moons ago - Huper Optik was it. It had really great heat rejection. I did see a good side by side comparison between Huper and Crystalline - Huper won. I have Suntek on my wife' scar and it doesn't reject IR nearly as well as the Huper did, but I don't know exactly which Suntek it is, it is supposed to be ceramic.
I am off to get Huper installed!!! Thanks for the recommendations.
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