This index tracks Japanese automotive excellence, measuring reliability innovation, tuner culture, and Rising Sun performance legacy. It includes key models Nissan Skyline GT-R, Toyota Supra, Honda NSX, Mazda RX-7, Subaru Impreza STI, Mitsubishi Lancer Evolution, Lexus LFA, Infinity G35, Mazda Miata and Datsun 240Z.
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